#!/usr/bin/env bash ### BEGIN INIT INFO # Provides: ip6t-firewall # Required-Start: $local_fs $remote_fs $syslog $network $time # Required-Stop: $local_fs $remote_fs $syslog $network # Should-Start: # Should-Stop: # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: IPv6 Firewall ### END INIT INFO # ------------- # - Settings # ------------- ipt_conf_dir="/etc/ipt-firewall" inc_functions_file="${ipt_conf_dir}/include_functions.conf" load_modules_file=${ipt_conf_dir}/load_modules_ipv6.conf conf_logging=${ipt_conf_dir}/logging_ipv6.conf conf_interfaces=${ipt_conf_dir}/interfaces_ipv6.conf conf_default_ports=${ipt_conf_dir}/default_ports.conf conf_main=${ipt_conf_dir}/main_ipv6.conf conf_post_declarations=${ipt_conf_dir}/post_decalrations.conf # ------------- # - Some checks and preloads.. # ------------- ip6t=$(which ip6tables) if [[ -z "$ip6t" ]] ; then echo "" echo -e "\tiptables was not found on this server!" echo echo -e "\tFirewall Script was stopped!" echo exit 1 fi if [[ ! -f "$inc_functions_file" ]] ; then echo "" echo -e "\tMissing include file '$inc_functions_file'" echo echo -e "\tFirewall Script was stopped!" echo exit 1 else source $inc_functions_file fi if [[ ! -f "$load_modules_file" ]]; then warn "No modules for loading configured. Missing file '$load_modules_file'!" else while read -r module ; do if ! lsmod | grep -q -E "^$module\s+" ; then /sbin/modprobe $module > /dev/null 2>&1 if [[ "$?" != "0" ]]; then warn "Loading module '$module' failed!" fi fi done < <(sed -ne 's/^[[:space:]]*\([^#].*\)[[:space:]]*/\1/p' $load_modules_file) fi if [[ ! -f "$conf_logging" ]]; then fatal "Missing configuration for logging - file '$conf_logging'" else source $conf_logging fi if [[ ! -f "$conf_default_ports" ]]; then fatal "Missing configuration for default_ports - file '$conf_default_ports'" else source $conf_default_ports fi if [[ ! -f "$conf_interfaces" ]]; then fatal "Missing interface configurations - file '$conf_interfaces'" else source $conf_interfaces fi if [[ ! -f "$conf_main" ]]; then fatal "Missing main configurations - file '$conf_main'" else source $conf_main fi if [[ ! -f "$conf_post_declarations" ]]; then fatal "Missing post declarations - file '$conf_post_declarations'" else source $conf_post_declarations fi echo if $terminal ; then echo -e "\033[37m\033[1m\tStarting firewall iptables (IPv6)..\033[m" else echo "Starting firewall iptables (IPv4).." fi echo # ------------- # --- Activate IP Forwarding # ------------- # --- # - Enable/Disable ip forwarding between interfaces # --- if $kernel_forward_between_interfaces ; then echononl "\tActivate Forwarding.." echo 1 > /proc/sys/net/ipv6/conf/all/forwarding else echononl "\t\033[33m\033[1mDisable Forwarding..\033[m" echo 0 > /proc/sys/net/ipv6/conf/all/forwarding fi echo_done # ------------- # --- Adjust Kernel Parameters # ------------- echononl "\tAdjust Kernel Parameters (Security/Tuning).." if $adjust_kernel_parameters ; then # --- # - Deactivate Source Routed Packets # --- for asr in /proc/sys/net/ipv6/conf/*/accept_source_route; do if $kernel_deactivate_source_route ; then echo 0 > $asr fi done # --- # - Deactivate sending ICMP redirects # --- if $kernel_dont_accept_redirects ; then echo "0" > /proc/sys/net/ipv6/conf/all/accept_redirects fi echo_done # Adjust Kernel Parameters (Security/Tuning) else echo_skipped fi # ------------- # --- Set default policies / Flush Rules # ------------- echo echononl "\tFlushing firewall iptable (IPv6).." # - default policies # - $ip6t -P INPUT ACCEPT $ip6t -P OUTPUT ACCEPT $ip6t -P FORWARD ACCEPT ## - flush chains ## - $ip6t -F $ip6t -F INPUT $ip6t -F OUTPUT $ip6t -F FORWARD $ip6t -F -t mangle $ip6t -F -t nat $ip6t -F -t raw $ip6t -X $ip6t -Z #$ip6t -t nat -A POSTROUTING -o $ext_if_static_1 -j MASQUERADE $ip6t -I FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu echo_done # Flushing firewall iptable (IPv6).. echo # ------------- # - Log given IP Addresses # ------------- echononl "\tLog given IP Addresses" if [[ ${#log_ip_arr[@]} -gt 0 ]]; then for _ip in ${log_ip_arr[@]} ; do $ip6t -A INPUT -s $_ip -j LOG --log-prefix "$_ip IN: " --log-level $log_level $ip6t -A OUTPUT -d $_ip -j LOG --log-prefix "$_ip OUT: " --log-level $log_level $ip6t -A FORWARD -s $_ip -j LOG --log-prefix "$_ip FORWARD FROM: " --log-level $log_level $ip6t -A FORWARD -d $_ip -j LOG --log-prefix "$_ip FORWARD TO: " --log-level $log_level done echo_done else echo_skipped fi # ------------- # --- ICMP Traffic (i.e. ping requests) # ------------- echononl "\tPermit all ICMP IPv6 traffic.." if $permit_all_icmp_traffic ; then $ip6t -A INPUT -p ipv6-icmp -j ACCEPT $ip6t -A OUTPUT -p ipv6-icmp -j ACCEPT $ip6t -A FORWARD -p ipv6-icmp -j ACCEPT echo_done else echo_skipped fi # ------------- # --- Stopping firewall if only flushing was requested (parameter flush) # ------------- case $1 in flush) warn No firewall rules are active! exit 0;; esac # --- # - Stop here, if no extern interface is configured # --- if [[ ${#ext_if_arr[@]} -lt 1 ]] ; then fatal "No extern Interface is configured!" fi # ------------- # --- Pass through Devices Interfaces (not firewalled) # ------------- if [[ ${#unprotected_if_arr[@]} -gt 0 ]]; then echononl "\tPass through Devices (not firewalled)" for _dev in ${unprotected_if_arr[@]} ; do if $log_unprotected || $log_all ; then $ip6t -A INPUT -i $_dev -j LOG --log-prefix "$log_prefix Not firewalled ${_dev}: " --log-level $log_level $ip6t -A OUTPUT -o $_dev -j LOG --log-prefix "$log_prefix Not firewalled ${_dev}: " --log-level $log_level if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -j LOG --log-prefix "$log_prefix Not firewalled ${_dev}: " --log-level $log_level $ip6t -A FORWARD -o $_dev -j LOG --log-prefix "$log_prefix Not firewalled ${_dev}: " --log-level $log_level fi fi $ip6t -A INPUT -i $_dev -j ACCEPT $ip6t -A OUTPUT -o $_dev -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -j ACCEPT $ip6t -A FORWARD -o $_dev -j ACCEPT fi done echo_done fi # ------------- # --- Block IPs / Networks / Interfaces # ------------- echononl "\tBlock IPs / Networks / Interfaces.." # --- # - Block IPs # --- for _ip in $blocked_ips ; do for _dev in ${ext_if_arr[@]} ; do if $log_blocked_ip || $log_all ; then $ip6t -A INPUT -i $_dev -s $_ip -j LOG --log-prefix "$log_prefix Blocked ${_ip}: " --log-level $log_level if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -s $_ip -j LOG --log-prefix "$log_prefix Blocked ${_ip}: " --log-level $log_level fi fi $ip6t -A INPUT -i $_dev -s $_ip -j DROP if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -s $_ip -j DROP fi done done # --- # - Block Interfaces # --- for _if in ${blocked_if_arr[@]} ; do if $log_blocked_if || $log_all ; then if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_if -j LOG --log-prefix "$log_prefix Blocked IF ${_if}: " --log-level $log_level $ip6t -A FORWARD -o $_if -j LOG --log-prefix "$log_prefix Blocked IF ${_if}: " --log-level $log_level fi $ip6t -A INPUT -i $_if -j LOG --log-prefix "$log_prefix Blocked IF ${_if}: " --log-level $log_level $ip6t -A OUTPUT -o $_if -j LOG --log-prefix "$log_prefix Blocked IF ${_if}: " --log-level $log_level fi if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_if -j DROP $ip6t -A FORWARD -o $_if -j DROP fi $ip6t -A INPUT -i $_if -j DROP $ip6t -A OUTPUT -o $_if -j DROP done echo_done # Block IPs / Networks / Interfaces.. # --- # - Allow Forwarding certain private Addresses # --- echononl "\tAllow forwarding (private) IPs / IP-Ranges.." if [[ ${#forward_private_ip_arr[@]} -gt 0 ]] ; then for _ip in ${forward_private_ip_arr[@]}; do if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -d $_ip -j ACCEPT $ip6t -A FORWARD -s $_ip -j ACCEPT echo_done else echo_skipped fi done else echo_skipped fi # ------------- # --- Protections against several attacks / unwanted packages # ------------- echo echononl "\tProtections against several attacks / unwanted packages.." if $protect_against_several_attacks ; then # --- # - Protection against syn-flooding # --- $ip6t -N syn-flood $ip6t -A syn-flood -m limit --limit 1/second --limit-burst 3 -j RETURN if $log_syn_flood || $log_all ; then $ip6t -A syn-flood -j LOG --log-prefix "$log_prefix SYN flood: " --log-level $log_level fi $ip6t -A syn-flood -j DROP # --- # - drop new packages without syn flag # --- if $log_new_not_sync || $log_all ; then $ip6t -A INPUT -p tcp ! --syn -m state --state NEW -j LOG --log-prefix "$log_prefix New but not SYN: " --log-level $log_level $ip6t -A OUTPUT -p tcp ! --syn -m state --state NEW -j LOG --log-prefix "$log_prefix New but not SYN: " --log-level $log_level if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -p tcp ! --syn -m state --state NEW -j LOG --log-prefix "$log_prefix New but not SYN: " --log-level $log_level fi fi $ip6t -A INPUT -p tcp ! --syn -m state --state NEW -j DROP $ip6t -A OUTPUT -p tcp ! --syn -m state --state NEW -j DROP if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -p tcp ! --syn -m state --state NEW -j DROP fi # --- # - drop invalid packages # --- if $log_invalid_state || $log_all ; then $ip6t -A INPUT -m state --state INVALID -j LOG --log-prefix "$log_prefix Invalid state: " --log-level $log_level if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -m state --state INVALID -j LOG --log-prefix "$log_prefix Invalid state: " --log-level $log_level fi fi $ip6t -A INPUT -m state --state INVALID -j DROP if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -m state --state INVALID -j DROP fi # --- # - ungewöhnliche Flags verwerfen # --- for _dev in ${ext_if_arr[@]} ; do if $log_invalid_flags || $log_all ; then $ip6t -A INPUT -i $_dev -p tcp --tcp-flags ALL ACK,RST,SYN,FIN -j LOG --log-prefix "$log_prefix Invalid flags: " --log-level $log_level $ip6t -A INPUT -i $_dev -p tcp --tcp-flags SYN,FIN SYN,FIN -j LOG --log-prefix "$log_prefix Invalid flags: " --log-level $log_level $ip6t -A INPUT -i $_dev -p tcp --tcp-flags SYN,RST SYN,RST -j LOG --log-prefix "$log_prefix Invalid flags: " --log-level $log_level if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -p tcp --tcp-flags ALL ACK,RST,SYN,FIN -j LOG --log-prefix "$log_prefix Invalid flags: " --log-level $log_level $ip6t -A FORWARD -i $_dev -p tcp --tcp-flags SYN,FIN SYN,FIN -j LOG --log-prefix "$log_prefix Invalid flags: " --log-level $log_level $ip6t -A FORWARD -i $_dev -p tcp --tcp-flags SYN,RST SYN,RST -j LOG --log-prefix "$log_prefix Invalid flags: " --log-level $log_level fi fi $ip6t -A INPUT -i $_dev -p tcp --tcp-flags ALL ACK,RST,SYN,FIN -j DROP $ip6t -A INPUT -i $_dev -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP $ip6t -A INPUT -i $_dev -p tcp --tcp-flags SYN,RST SYN,RST -j DROP if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -p tcp --tcp-flags ALL ACK,RST,SYN,FIN -j DROP $ip6t -A FORWARD -i $_dev -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP $ip6t -A FORWARD -i $_dev -p tcp --tcp-flags SYN,RST SYN,RST -j DROP fi done # --- # - Refuse private addresses on extern interfaces # --- # - Refuse spoofed packets pretending to be from your IP address. if $log_spoofed || $log_all ; then for _ip in ${ext_ip_arr[@]} ; do $ip6t -A INPUT -s $_ip -d $_ip -j LOG --log-prefix "$log_prefix Spoofed (own ip): " --log-level $log_level if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -s $_ip -d $_ip -j LOG --log-prefix "$log_prefix Spoofed (own ip): " --log-level $log_level fi done fi for _ip in ${ext_ip_arr[@]} ; do $ip6t -A INPUT -i $_dev -s $_ip -d $_ip -j DROP if $kernel_forward_between_interfaces ; then $ipi6t -A FORWARD -s $_ip -d $_ip -j DROP fi done # - private Adressen auf externen interface verwerfen for _dev in ${ext_if_arr[@]} ; do if $log_spoofed || $log_all ; then $ip6t -A INPUT -i $_dev -s $ula_block -j LOG --log-prefix "$log_prefix Private (ula_block): " --log-level $log_level $ip6t -A INPUT -i $_dev -s $loopback -j LOG --log-prefix "$log_prefix (loopback): " --log-level $log_level if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -s $ula_block -j LOG --log-prefix "$log_prefix Private (ula_block): " --log-level $log_level $ip6t -A FORWARD -i $_dev -s $loopback -j LOG --log-prefix "$log_prefix (loopback): " --log-level $log_level fi fi $ip6t -A INPUT -i $_dev -s $ula_block -j DROP $ip6t -A INPUT -i $_dev -s $loopback -j DROP if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -s $ula_block -j DROP $ip6t -A FORWARD -i $_dev -s $loopback -j DROP fi # Don't allow spoofing from that server $ip6t -A OUTPUT -o $_dev -s $ula_block -j DROP $ip6t -A OUTPUT -o $_dev -s $loopback -j DROP if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_dev -s $ula_block -j DROP $ip6t -A FORWARD -o $_dev -s $loopback -j DROP fi done echo_done else echo_skipped fi # ------------- # --- Log VoIP Traffic (local telephone systems ( ${tel_sys_ip_arr[@]}) # ------------- if $log_voip || $log_all ; then for _ip in ${tel_sys_ip_arr[@]} ; do $ip6t -A FORWARD -d $_ip -j LOG --log-prefix "$log_prefix [VoIP] " --log-level $log_level done fi #for _PORT in ${VOIP_PORTS} ; do # $ip6t -A FORWARD -p udp --sport $_PORT -j LOG --log-prefix "$log_prefix [VoIP] " --log-level $log_level #done # ------------- # ------------- Stopping firewall here if requested (parameter stop) # ------------- case $1 in sto*) echo if $terminal ; then echo -e "\t\033[37m\033[1mStop was requested. No more rules..\033[m" else echo "Stop was requested. No more firewall rules.." fi echo exit 0;; esac echo # ------------- # --- iPerf # ------------- # iPerf is a tool for active measurements of the maximum achievable bandwidth on IP networks. # It supports tuning of various parameters related to timing, buffers and protocols (TCP, UDP, # SCTP with IPv4 and IPv6). For each test it reports the bandwidth, loss, and other parameters. echononl "\tCreate \"iPerf\" rules.." if $create_iperf_rules ; then $ip6t -A INPUT -p tcp --dport 5001 -j ACCEPT $ip6t -A INPUT -p tcp --sport 5001 -j ACCEPT # $ip6t -A OUTPUT -p tcp --dport 5001 -j ACCEPT $ip6t -A OUTPUT -p tcp --sport 5001 -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -p tcp --dport 5001 -j ACCEPT $ip6t -A FORWARD -p tcp --sport 5001 -j ACCEPT fi echo_done else echo_skipped fi # --- # - Drop packets not wanted on gateway # --- echononl "\tDrop packets not wanted on gateway" for _dev in ${local_if_arr[@]} ; do if $log_not_wanted || $log_all ; then if $not_wanted_ident ; then $ip6t -A INPUT -i $_dev -p tcp --dport $standard_ident_port -j LOG --log-prefix "$log_prefix not wanted: " --log-level $log_level fi for _port in ${not_wanted_on_gw_tcp_port_arr[@]} ; do $ip6t -A INPUT -i $_dev -p tcp --dport $_port -j LOG --log-prefix "$log_prefix not wanted: " --log-level $log_level done for _port in ${not_wanted_on_gw_udp_port_arr[@]} ; do $ip6t -A INPUT -i $_dev -p udp --dport $_port -j LOG --log-prefix "$log_prefix not wanted: " --log-level $log_level done fi if $not_wanted_ident ; then $ip6t -A INPUT -i $_dev -p tcp --dport $standard_ident_port -j REJECT --reject-with tcp-reset fi for _port in ${not_wanted_on_gw_tcp_port_arr[@]} ; do $ip6t -A INPUT -i $_dev -p tcp --dport $_port -j DROP done for _port in ${not_wanted_on_gw_udp_port_arr[@]} ; do $ip6t -A INPUT -i $_dev -p udp --dport $_port -j DROP done done echo_done # ------------- # --- Generally prohibited from WAN # ------------- echononl "\tGenerally prohibited from WAN" for _dev in ${ext_if_arr[@]} ; do if $log_prohibited || $log_all ; then if $block_ident ; then $ip6t -A INPUT -p tcp -i $_dev --dport $standard_ident_port -j LOG --log-prefix "$log_prefix gen. prohibited: " --log-level $log_level fi for _port in ${block_tcp_port_arr[@]} ; do $ip6t -A INPUT -p tcp -i $_dev --dport $_port -j LOG --log-prefix "$log_prefix gen. prohibited: " --log-level $log_level done for _port in ${block_udp_port_arr[@]} ; do $ip6t -A INPUT -p udp -i $_dev --dport $_port -j LOG --log-prefix "$log_prefix gen. prohibited: " --log-level $log_level done if $kernel_forward_between_interfaces ; then if $block_ident ; then $ip6t -A FORWARD -p tcp -i $_dev --dport $standard_ident_port -j LOG --log-prefix "$log_prefix gen. prohibited: " --log-level $log_level fi for _port in ${block_tcp_port_arr[@]} ; do $ip6t -A FORWARD -p tcp -i $_dev --dport $_port -j LOG --log-prefix "$log_prefix gen. prohibited: " --log-level $log_level done for _port in ${block_udp_port_arr[@]} ; do $ip6t -A FORWARD -p udp -i $_dev --dport $_port -j LOG --log-prefix "$log_prefix gen. prohibited: " --log-level $log_level done fi fi if $block_ident ; then $ip6t -A INPUT -p tcp -i $_dev --dport $standard_ident_port -j REJECT --reject-with tcp-reset fi for _port in ${block_tcp_port_arr[@]} ; do $ip6t -A INPUT -p tcp -i $_dev --dport $_port -j DROP done for _port in ${block_udp_port_arr[@]} ; do $ip6t -A INPUT -p udp -i $_dev --dport $_port -j DROP done if $kernel_forward_between_interfaces ; then if $block_ident ; then $ip6t -A FORWARD -p tcp -i $_dev --dport $standard_ident_port -j REJECT --reject-with tcp-reset fi for _port in ${block_tcp_port_arr[@]} ; do $ip6t -A FORWARD -p tcp -i $_dev --dport $_port -j DROP done for _port in ${block_udp_port_arr[@]} ; do $ip6t -A FORWARD -p udp -i $_dev --dport $_port -j DROP done fi done echo_done echo # ------------- # --- Traffic generally allowed # ------------- echononl "\tLoopback device generally allowed.." # --- # - Loopback device # --- $ip6t -A INPUT -i lo -j ACCEPT $ip6t -A OUTPUT -o lo -j ACCEPT echo_done # --- # - Allow all Traffic from source mac-address # --- echononl "\tAllow all Traffic from MAC Source-Address" if [[ ${#allow_all_mac_src_address_arr[@]} -gt 0 ]] ; then for _mac in ${allow_all_mac_src_address_arr[@]} ; do for _dev in ${local_if_arr[@]} ; do $ip6t -A INPUT -i $_dev -m mac --mac-source $_mac -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i $_dev -m mac --mac-source $_mac -j ACCEPT fi done done echo_done else echo_skipped fi # --- # - Allow local Traffic from source mac-address # --- echononl "\tAllow local Traffic from MAC Source-Address" if [[ ${#allow_local_mac_src_address_arr[@]} -gt 0 ]] ; then for _mac in ${allow_local_mac_src_address_arr[@]} ; do for _dev in ${local_if_arr[@]} ; do $ip6t -A INPUT -i $_dev -m mac --mac-source $_mac -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_dev -m mac --mac-source $_mac -j ACCEPT fi done done echo_done else echo_skipped fi # --- # - Allow remote Traffic from source mac-address # --- echononl "\tAllow remote Traffic from MAC Source-Address" if [[ ${#allow_remote_mac_src_address_arr[@]} -gt 0 ]] ; then for _mac in ${allow_remote_mac_src_address_arr[@]} ; do for _dev in ${ext_if_arr[@]} ; do if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_dev -m mac --mac-source $_mac -j ACCEPT fi done done echo_done else echo_skipped fi # --- # - Already established connections # --- echononl "\tAccept already established connections.." $ip6t -A INPUT -p ALL -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT $ip6t -A OUTPUT -p ALL -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -p ALL -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT fi echo_done # --- # - Permit all traffic through VPN lines # --- echononl "\tPermit all traffic through VPN lines.." for _vpn_if in ${vpn_if_arr[@]} ; do $ip6t -A INPUT -i $_vpn_if -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then for _local_dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_vpn_if -o $_local_dev -m conntrack --ctstate NEW -j ACCEPT done fi done echo_done # --- # - Telefon Systems # --- echononl "\tAllow all Traffic between Telefon Systems" if [[ ${#tele_sys_ip_arr[@]} -gt 1 ]] && $allow_between_tele_systems && ! $permit_between_local_networks ; then for _ip_1 in ${tele_sys_ip_arr[@]} ; do for _ip_2 in ${tele_sys_ip_arr[@]} ; do #[[ "$_ip_1" = "$_ip_2" ]] && continue $ip6t -A FORWARD -s $_ip_1 -d $_ip_2 -p ALL -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi # --- # - Telefon Systems to remote SIP-Server # --- echononl "\tTelefon System to remote SIP-Server" if [[ ${#tele_sys_ip_arr[@]} -gt 0 ]] ; then if [ -z "$tele_sys_remote_sip_server_port" -o -z "$tele_sys_local_sip_server_port" ] ; then echo_failed warn "Local or remote SIP Port not given"! else for _ip in ${tele_sys_ip_arr[@]} ; do $ip6t -A FORWARD -p udp -s $_ip --sport $tele_sys_local_sip_server_port \ --dport $tele_sys_remote_sip_server_port -m conntrack --ctstate NEW -j ACCEPT done fi echo_done else echo_skipped fi # --- # - All request from local networks to the internet # --- echononl "\tPermit all traffic from local networks to the internet.." if $permit_local_net_to_inet ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p ALL -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_dev -p ALL -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Networks not firewalled through extern interfaces # --- echononl "\tAllow these local networks any access to the internet" if [[ ${#any_access_to_inet_network_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces \ && ! $permit_local_net_to_inet ; then for _net in ${any_access_to_inet_network_arr[@]}; do for _dev in ${ext_if_arr[@]} ; do $ip6t -A FORWARD -o $_dev -p ALL -s $_net -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi echononl "\tAllow these local networks any access from the internet" if [[ ${#any_access_from_inet_network_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _net in ${any_access_from_inet_network_arr[@]}; do for _dev in ${ext_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p ALL -d $_net -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi # --- # - Allow local services from given extern networks # --- echononl "\tAllow local services from given extern networks" if [[ ${#allow_ext_net_to_local_service_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in "${allow_ext_net_to_local_service_arr[@]}" ; do IFS=',' read -a _val_arr <<< "${_val}" for _dev in ${ext_if_arr[@]} ; do if containsElement "${_val_arr[1]}" "${gateway_ipv6_address_arr[@]}" ; then $ip6t -A INPUT -i $_dev -p ${_val_arr[3]} -s ${_val_arr[0]} -d ${_val_arr[1]} --dport ${_val_arr[2]} -m conntrack --ctstate NEW -j ACCEPT fi $ip6t -A FORWARD -i $_dev -p ${_val_arr[3]} -s ${_val_arr[0]} -d ${_val_arr[1]} --dport ${_val_arr[2]} -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi # --- # - Allow all traffic from extern address/network to local address/network # --- echononl "\tAllow all traffic from extern to local network/address" if [[ ${#allow_ext_net_to_local_net_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in ${allow_ext_net_to_local_net_arr[@]} ; do IFS=',' read -a _val_arr <<< "${_val}" for _dev in ${ext_if_arr[@]} ; do $ip6t -A FORWARD -p ALL -i $_dev -s ${_val_arr[0]} -d ${_val_arr[1]} -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi # --- # - Block all extern traffic to (given) local network # --- echononl "\tBlock all extern traffic to (given) local network" if [[ ${#block_all_ext_to_local_net_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _net in ${block_all_ext_to_local_net_arr[@]} ; do for _dev in ${ext_if_arr[@]} ; do $ip6t -A FORWARD -p ALL -i $_dev -d $_net -m conntrack --ctstate NEW -j DROP done done echo_done else echo_skipped fi # --- # - Allow local services from given local networks # --- echononl "\tAllow local services from given local networks" if [[ ${#allow_local_net_to_local_service_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in "${allow_local_net_to_local_service_arr[@]}" ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[0]} -d ${_val_arr[1]} --dport ${_val_arr[2]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then if [[ "${_val_arr[3]}" = "tcp" ]]; then $ip6t -A FORWARD -p ${_val_arr[3]} -d ${_val_arr[1]} --dport ${_val_arr[2]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[1]} --sport ${_val_arr[2]} --tcp-flag ACK ACK -j ACCEPT fi fi done echo_done else echo_skipped fi # --- # - Allow all traffic from local network to local ip-address # --- echononl "\tAllow all traffic from local network to local ip-address" if [[ ${#allow_local_net_to_local_ip_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in ${allow_local_net_to_local_ip_arr[@]} ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ALL -s ${_val_arr[0]} -d ${_val_arr[1]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT fi done echo_ok else echo_skipped fi # --- # - Allow all traffic from local ip-address to local network # --- echononl "\tAllow all traffic from local ip-address to local network" if [[ ${#allow_local_ip_to_local_net_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in ${allow_local_ip_to_local_net_arr[@]} ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ALL -s ${_val_arr[0]} -d ${_val_arr[1]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT fi done echo_ok else echo_skipped fi # --- # - Allow all traffic from (one) local network to (another) local network # --- echononl "\tAllow all traffic from local network to (another) local network" if [[ ${#allow_local_net_to_local_net_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in ${allow_local_net_to_local_net_arr[@]} ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ALL -s ${_val_arr[0]} -d ${_val_arr[1]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT fi done echo_ok else echo_skipped fi # --- # - Allow local ip address from given local interface # --- echononl "\tAllow local ip address from given local interface" if [[ ${#allow_local_if_to_local_ip_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in ${allow_local_if_to_local_ip_arr[@]} ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ALL -i ${_val_arr[0]} -d ${_val_arr[1]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -i ${_val_arr[0]} -d ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -o ${_val_arr[0]} -s ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Allow extern service from given local interface # --- echononl "\tAllow extern service from given local interface" if [[ ${#allow_local_if_to_ext_service_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in "${allow_local_if_to_ext_service_arr[@]}" ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ${_val_arr[3]} -i ${_val_arr[0]} -d ${_val_arr[1]} --dport ${_val_arr[2]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then if [[ "${_val_arr[3]}" = "tcp" ]]; then $ip6t -A FORWARD -p tcp -i ${_val_arr[0]} -d ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -o ${_val_arr[0]} -s ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT fi fi done echo_done else echo_skipped fi # --- # - Allow extern network from given local interface # --- echononl "\tAllow extern network from given local interface" if [[ ${#allow_local_if_to_ext_net_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in ${allow_local_if_to_ext_net_arr[@]} ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ALL -i ${_val_arr[0]} -d ${_val_arr[1]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -i ${_val_arr[0]} -d ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -o ${_val_arr[0]} -s ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Allow extern service from given local network # --- echononl "\tAllow extern service from given local network" if [[ ${#allow_local_net_to_ext_service_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in "${allow_local_net_to_ext_service_arr[@]}" ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[0]} -d ${_val_arr[1]} --dport ${_val_arr[2]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then if [[ "${_val_arr[3]}" = "tcp" ]]; then $ip6t -A FORWARD -p ${_val_arr[3]} -d ${_val_arr[1]} --dport ${_val_arr[2]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[1]} --sport ${_val_arr[2]} --tcp-flag ACK ACK -j ACCEPT fi fi done echo_done else echo_skipped fi # --- # - Allow extern network from given local network # --- echononl "\tAllow extern network from given local network" if [[ ${#allow_local_net_to_ext_net_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces ; then for _val in ${allow_local_net_to_ext_net_arr[@]} ; do IFS=',' read -a _val_arr <<< "${_val}" $ip6t -A FORWARD -p ALL -s ${_val_arr[0]} -d ${_val_arr[1]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d ${_val_arr[1]} -s ${_val_arr[0]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -d ${_val_arr[0]} -s ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Separate local networks # --- echononl "\tSeparate local networks.." if [[ ${#separate_local_network_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces ; then for _net in ${separate_local_network_arr[@]}; do for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -o $_dev -p all -s $_net -j DROP done done echo_done else echo_skipped fi # --- # - Separate local interfaces # --- echononl "\tSeparate local interfaces.." if [[ ${#separate_local_if_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces ; then for _dev_1 in ${separate_local_if_arr[@]}; do for _dev_2 in ${local_if_arr[@]} ; do [[ "$_dev_1" = "$_dev_2" ]] && continue $ip6t -A FORWARD -i $_dev_1 -o $_dev_2 -p all -j DROP $ip6t -A FORWARD -i $_dev_2 -o $_dev_1 -p all -j DROP done done echo_done else echo_skipped fi # --- # - Permit all traffic between local networks # --- echononl "\tPermit all traffic between local networks.." if $kernel_forward_between_interfaces ; then if $permit_between_local_networks ; then for _dev_1 in ${local_if_arr[@]} ; do for _dev_2 in ${local_if_arr[@]} ; do # - Notice: # - In case of routing multiple netwoks on the same interface or # - using alias interfaces like eth0:0, you need a rule with # - incomming- and outgoing interface are equal! # - # - So DON'T add statement like this: # - [[ "$_dev_2" = "$_dev_1" ]] && continue # - $ip6t -A FORWARD -i $_dev_1 -o $_dev_2 -p ALL -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if [[ "$_dev_2" = "$_dev_1" ]] && $local_alias_interfaces ; then $ip6t -A FORWARD -i $_dev_1 -o $_dev_2 -p tcp --tcp-flag ACK ACK -j ACCEPT fi done done echo_done else echo_skipped fi else echo_skipped fi # ------------- # --- Services # ------------- echo if $terminal ; then echo -e "\t\033[37m\033[1mAdd Rules for Services..\033[m" else echo "Add Rules for Services.." fi echo -e "\t\033[37m\033[1mAdd Rules for Services..\033[m" # --- # - IPv4 over IPv6 # --- # --- # - DHCP # --- echononl "\t\tLocal DHCP Client" if [[ ${#dhcp_client_interfaces_arr[@]} -gt 0 ]] ; then for _dev in ${dhcp_client_interfaces_arr[@]} ; do $ip6t -A INPUT -i $_dev -p udp -m udp --dport 546 -j ACCEPT $ip6t -A OUTPUT -o $_dev -p udp -m udp --dport 547 -j ACCEPT done echo_done else echo_skipped fi echononl "\t\tDHCP Service (local network only)" if $local_dhcp_service ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A INPUT -i $_dev -p icmpv6 --icmpv6-type router-advertisement -j ACCEPT $ip6t -A INPUT -i $_dev -p icmpv6 --icmpv6-type router-solicitation -j ACCEPT $ip6t -A INPUT -i $_dev -p icmpv6 --icmpv6-type echo-request -j ACCEPT $ip6t -A INPUT -i $_dev -p icmpv6 --icmpv6-type echo-reply -j ACCEPT $ip6t -A INPUT -p udp -i $_dev --sport 546 --dport 547 -j ACCEPT $ip6t -A OUTPUT -p udp -o $_dev --sport 547 --dport 546 -j ACCEPT done echo_done else echo_skipped fi # --- # - DHCP Failover # --- echononl "\t\tDHCP Failover Server" if $local_dhcp_service && [[ ${#dhcp_failover_server_ip_arr[@]} -gt 0 ]] ; then for _ip in ${dhcp_failover_server_ip_arr[@]} ; do $ip6t -A INPUT -p tcp --dport $dhcp_failover_port -s $_ip -m conntrack --ctstate NEW -j ACCEPT $ip6t -A OUTPUT -p tcp -d $_ip --dport $dhcp_failover_port -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - DNS out only # --- echononl "\t\tDNS out only" # - Nameservers on the INET must be reachable for the local recursiv nameserver # - but also for all others # - for _dev in ${ext_if_arr[@]} ; do # - out from local and virtual mashine(s) $ip6t -A OUTPUT -o $_dev -p udp --dport 53 -m conntrack --ctstate NEW -j ACCEPT $ip6t -A OUTPUT -o $_dev -p tcp --dport 53 -m conntrack --ctstate NEW -j ACCEPT # - Only useful (needed) if kernel forwarding is activated (kernel_forward_between_interfaces=true) if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then # - forward from virtual mashine(s) $ip6t -A FORWARD -o $_dev -p udp --dport 53 -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -o $_dev -p tcp --dport 53 -m conntrack --ctstate NEW -j ACCEPT fi done echo_done # --- # - DNS Service Gateway # --- echononl "\t\tDNS Service Gateway" # - Local Nameservice # - if $local_dns_service ; then # dns requests # # Note: # If the total size of the DNS record is larger than 512 bytes, # it will be sent over TCP, not UDP. # # - Allow requests from local networks # - for _dev in ${local_if_arr[@]} ; do # - in $ip6t -A INPUT -i $_dev -p udp --dport 53 -m conntrack --ctstate NEW -j ACCEPT $ip6t -A INPUT -i $_dev -p tcp --dport 53 -m conntrack --ctstate NEW -j ACCEPT done # - Zonetransfere (uses tcp/53) # for _ip in ${dns_server_ips[@]} ; do # - out # - # - local master (here) gets request for a zone from slave ($_ip) $ip6t -A INPUT -p tcp -s $_ip --sport $unprivports --dport 53 -m conntrack --ctstate NEW -j ACCEPT # - in # - # - local slave (here) requests zone from master ($_ip) $ip6t -A OUTPUT -p tcp --sport $unprivports -d $_ip --dport 53 -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - DNS Services at local Network # --- echononl "\t\tDNS Service local Network" # - Make nameservers at the local network area rechable for all # - if [[ ${#dns_server_ip_arr[@]} -gt 0 ]] ; then # dns requests # # Note: # If the total size of the DNS record is larger than 512 bytes, # it will be sent over TCP, not UDP. # for _ip in ${dns_server_ip_arr[@]} ; do $ip6t -A OUTPUT -p udp -d $_ip --dport 53 -m conntrack --ctstate NEW -j ACCEPT $ip6t -A OUTPUT -p tcp -d $_ip --dport 53 -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p udp -d $_ip --dport 53 -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport 53 -m conntrack --ctstate NEW -j ACCEPT done fi done echo_done else echo_skipped fi # --- # - SSH out only # --- echononl "\t\tSSH out only" if $allow_ssh_request_out && ! $permit_local_net_to_inet ; then # - Provide SSH to everywhere (also LAN) for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_ssh_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_ssh_port -m conntrack --ctstate NEW -j ACCEPT fi done for _dev in ${local_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_ssh_port -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - SSH Service Gateway # --- echononl "\t\tSSH Service Gateway (also from WAN)" if $local_ssh_service ; then # - Provides SSH in from everywhere for _port in ${ssh_port_arr[@]} ; do $ip6t -A INPUT -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - SSH Services only local Network # --- echononl "\t\tSSH Services only local Network" if [[ ${#ssh_server_only_local_ip_arr[@]} -gt 0 ]] ; then for _ip in ${ssh_server_only_local_ip_arr[@]} ; do for _port in ${ssh_port_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip -dport $_port -m conntrack --ctstate NEW -j ACCEPT done fi # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip --dport $_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $_port --tcp-flag ACK ACK -j ACCEPT fi done done echo_done else echo_skipped fi # --- # - SSH Services DMZ # --- echononl "\t\tSSH Services DMZ" unset no_if_for_ip_arr declare -a no_if_for_ip_arr if [[ ${#ssh_server_dmz_arr[@]} -gt 0 ]] ; then for _ip in "${!ssh_server_dmz_arr[@]}"; do # - Skip if no interface is given # - if [[ -z "${ssh_server_dmz_arr[$_ip]}" ]] ; then no_if_for_ip_arr+=("$_ip") continue fi for _port in ${ssh_port_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i ${ssh_server_dmz_arr[$_ip]} -p tcp --dport $_port -d $_ip -m conntrack --ctstate NEW -j ACCEPT fi # - From intern if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip -m multiport --dports $_port -m conntrack --ctstate NEW -j ACCEPT done fi # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then for _port in ${ssh_port_arr[@]} ; do $ip6t -A FORWARD -p tcp -d $_ip --dport $_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $_port --tcp-flag ACK ACK -j ACCEPT done fi done done if [[ ${#no_if_for_ip_arr[@]} -gt 0 ]] ; then echo_warning for _ip in ${no_if_for_ip_arr[@]} ; do warn "No Interface given for ip '$_ip'" done else echo_done fi else echo_skipped fi # --- # - SSH Service between local Netwotks # --- echononl "\t\tSSH Service between local Netwotks" if $allow_ssh_between_local_nets ; then if $kernel_forward_between_interfaces ; then for _dev_1 in ${local_if_arr[@]} ; do for _port in ${ssh_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev_1 -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _dev_2 in ${local_if_arr[@]} ; do if ! $permit_between_local_networks ; then # - Notice: # - In case of routing multiple netwoks on the same interface or # - using alias interfaces like eth0:0, you need a rule with # - incomming- and outgoing interface are equal! # - # - So DON'T add statement like this: # - [[ "$_dev_2" = "$_dev_1" ]] && continue # - for _port in ${ssh_port_arr[@]} ; do $ip6t -A FORWARD -i $_dev_1 -o $_dev_2 -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done fi # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if [[ "$_dev_2" = "$_dev_1" ]] && $local_alias_interfaces ; then for _port in ${ssh_port_arr[@]} ; do $ip6t -A FORWARD -i $_dev_1 -o $_dev_2 -p tcp --sport $_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -i $_dev_1 -o $_dev_2 -p tcp --dport $_port --tcp-flag ACK ACK -j ACCEPT done fi done done fi echo_done else echo_skipped fi # --- # - Cisco kompartibles VPN (FRITZ!Box) # --- echononl "\t\tCisco VPN Service (FRITZ\!Box) only out" if $allow_cisco_vpn_out && [[ ${#cisco_vpn_out_port_arr[@]} -gt 0 ]]; then for _dev in ${ext_if_arr[@]} ; do for _port in ${cisco_vpn_out_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT fi done done for _vpn_if in ${vpn_if_arr[@]} ; do $ip6t -A OUTPUT -o $_vpn_if -p $cisco_vpn_out_protocol -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_vpn_if -p $cisco_vpn_out_protocol -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - VPN Service only out # --- echononl "\t\tVPN Service only out" if $allow_vpn_out && [[ ${#vpn_out_port_arr[@]} -gt 0 ]]; then for _dev in ${ext_if_arr[@]} ; do for _port in ${vpn_out_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT fi done done for _vpn_if in ${vpn_if_arr[@]} ; do $ip6t -A OUTPUT -o $_vpn_if -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_vpn_if -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - VPN Service Gateway # --- echononl "\t\tVPN Service Gateway" if $local_vpn_service ; then # - Cconnection establishment # - for _port in ${vpn_gw_port_arr[@]} ; do $ip6t -A INPUT -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - VPN Service DMZ # --- echononl "\t\tVPN Service DMZ" unset no_if_for_ip_arr declare -a no_if_for_ip_arr if [[ ${#vpn_server_dmz_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces ; then for _ip in ${!vpn_server_dmz_arr[@]} ; do # - Skip if no interface is given # - if [[ -z "${vpn_server_dmz_arr[$_ip]}" ]] ; then no_if_for_ip_arr+=("$_ip") continue fi for _port in ${vpn_local_net_port_arr[@]} ; do $ip6t -A FORWARD -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done done if [[ ${#no_if_for_ip_arr[@]} -gt 0 ]] ; then echo_warning for _ip in ${no_if_for_ip_arr[@]} ; do warn "No Interface given for ip '$_ip'" done else echo_done fi else echo_skipped fi # --- # - HTTP(S) OUT # --- echononl "\t\tHTTP(S) out only" if $allow_http_request_out && ! $permit_local_net_to_inet ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp -m multiport --dports $standard_http_ports -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp -m multiport --dports $standard_http_ports -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - HTTP(S) (local) Webserver # --- echononl "\t\tHTTP(S) Services Gateway" # - Access to the local Webservice if $local_http_service ; then $ip6t -A INPUT -p tcp -m multiport --dports $http_ports -m conntrack --ctstate NEW -j ACCEPT echo_done else echo_skipped fi # --- # - HTTP(S) Services only local Network # --- echononl "\t\tHTTP(S) Services only local Network" # - Access to the Webservices (LAN) if [[ ${#http_server_only_local_ip_arr[@]} -gt 0 ]] ; then for _ip in ${http_server_only_local_ip_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip -m multiport --dports $http_ports -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip -m multiport --dports $http_ports -m conntrack --ctstate NEW -j ACCEPT done fi # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip -m multiport --dports $http_ports --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip -m multiport --sports $http_ports --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - HTTP(S) Services DMZ # --- echononl "\t\tHTTP(S) Services DMZ" unset no_if_for_ip_arr declare -a no_if_for_ip_arr if [[ ${#http_server_dmz_arr[@]} -gt 0 ]] ; then http_port_arr=(${http_ports//,/ }) for _ip in "${!http_server_dmz_arr[@]}"; do # - Skip if no interface is given # - if [[ -z "${http_server_dmz_arr[$_ip]}" ]] ; then no_if_for_ip_arr+=("$_ip") continue fi for _port in ${http_port_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i ${http_server_dmz_arr[$_ip]} -p tcp --dport $_port -d $_ip -m conntrack --ctstate NEW -j ACCEPT fi done if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip -m multiport --dports $http_ports -m conntrack --ctstate NEW -j ACCEPT done fi # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip -m multiport --dports $http_ports --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip -m multiport --sports $http_ports --tcp-flag ACK ACK -j ACCEPT fi done if [[ ${#no_if_for_ip_arr[@]} -gt 0 ]] ; then echo_warning for _ip in ${no_if_for_ip_arr[@]} ; do warn "No Interface given for ip '$_ip'" done else echo_done fi else echo_skipped fi # --- # - HTTPS Services DMZ (only port 443) # --- echononl "\t\tHTTPS Services DMZ (only port $standard_https_port)" unset no_if_for_ip_arr declare -a no_if_for_ip_arr if [[ ${#http_ssl_server_dmz_arr[@]} -gt 0 ]] ; then for _ip in "${!http_ssl_server_dmz_arr[@]}"; do # - Skip if no interface is given # - if [[ -z "${http_ssl_server_dmz_arr[$_ip]}" ]] ; then no_if_for_ip_arr+=("$_ip") continue fi $ip6t -A OUTPUT -p tcp -d $_ip --dport $standard_https_port -m conntrack --ctstate NEW -j ACCEPT # - From extern if $kernel_forward_between_interfaces ; then $ip6t -t filter -A FORWARD -i ${http_ssl_server_dmz_arr[$_ip]} -p tcp --dport $standard_https_port -d $_ip -j ACCEPT fi # - From intern if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $standard_https_port -m conntrack --ctstate NEW -j ACCEPT done fi # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip --dport $standard_https_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $standard_https_port --tcp-flag ACK ACK -j ACCEPT fi done if [[ ${#no_if_for_ip_arr[@]} -gt 0 ]] ; then echo_warning for _ip in ${no_if_for_ip_arr[@]} ; do warn "No Interface given for ip '$_ip'" done else echo_done fi else echo_skipped fi # --- # - Mail Service SMTP only out # --- echononl "\t\tMail Services SMTP only out" if $allow_smtp_request_out && ! $permit_local_net_to_inet ; then # - Provide SMTP out for all to WAN for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -p tcp -o $_dev --dport $standard_smtp_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -p tcp -o $_dev --dport $standard_smtp_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - SMTP (Relay) Service Gateway # --- echononl "\t\tSMTP (Relay) Service Gateway (only on local network)" if $local_smtp_service ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A INPUT -p tcp -i $_dev --dport $standard_smtp_port -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - Mail User Services smtps/pop(s)/imap(s) only out # --- echononl "\t\tMail Services smtps/pop(s)/imap(s) only out" if $allow_mail_request_out && ! $permit_local_net_to_inet ; then # - Provide using Mailservices (WAN) from whole LAN # - # - Not needed from local machine. But for testing pupose (i.e. telnet ) # - # - for _dev in ${ext_if_arr[@]} ; do if $provide_mailservice_from_local ; then # - Note! # - this provides access both to LAN and WAN $ip6t -A OUTPUT -p tcp -m multiport --dports $standard_mailuser_ports -m conntrack --ctstate NEW -j ACCEPT fi if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A FORWARD -o $_dev -p tcp -m multiport --dports $standard_mailuser_ports -m conntrack --ctstate NEW -j ACCEPT done fi done echo_done else echo_skipped fi # --- # - Mail Service SMTP only local Networks # --- echononl "\t\tMail Service SMTP only local Networks" if [[ ${#mail_server_only_local_ip_arr[@]} -gt 0 ]] ; then for _ip in ${mail_server_only_local_ip_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip --dport $standard_smtp_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $standard_smtp_port -m conntrack --ctstate NEW -j ACCEPT done fi # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip --dport $standard_smtp_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $standard_smtp_port --tcp-flag ACK ACK -j ACCEPT fi echo_done done else echo_skipped fi # --- # - Mail Services smtps/pop(s)/imap(s) only local Networks # --- echononl "\t\tMail Services smtps/pop(s)/imap(s) only local Networks" if [[ ${#mail_server_only_local_ip_arr[@]} -gt 0 ]]; then for _ip in ${mail_server_only_local_ip_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip -m multiport --dports $mail_user_ports -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip -m multiport --dports $mail_user_ports -m conntrack --ctstate NEW -j ACCEPT done fi # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip -m multiport --dports $mail_user_ports --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip -m multiport --sports $mail_user_ports --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Mail Server DMZ # --- echononl "\t\tMail Server DMZ" unset no_if_for_ip_arr declare -a no_if_for_ip_arr if [[ ${#mail_server_dmz_arr[@]} -gt 0 ]] ; then mail_port_arr=(${mail_user_ports//,/ }) mail_port_arr+=("$mail_smtp_port") for _ip in "${!mail_server_dmz_arr[@]}"; do # - Skip if no interface is given # - if [[ -z "${mail_server_dmz_arr[$_ip]}" ]] ; then no_if_for_ip_arr+=("$_ip") continue fi for _port in ${mail_port_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -i ${mail_server_dmz_arr[$_ip]} -p tcp --dport $_port -d $_ip -m conntrack --ctstate NEW -j ACCEPT done if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip -m multiport --dports $mail_smtp_port,$mail_user_ports -m conntrack --ctstate NEW -j ACCEPT done fi # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip -m multiport --dports $standard_smtp_port,$mail_user_ports --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip -m multiport --sports $standard_smtp_port,$mail_user_ports --tcp-flag ACK ACK -j ACCEPT fi done if [[ ${#no_if_for_ip_arr[@]} -gt 0 ]] ; then echo_warning for _ip in ${no_if_for_ip_arr[@]} ; do warn "No Interface given for ip '$_ip'" done else echo_done fi else echo_skipped fi # --- # - FTP common # --- ftp_helper_output_defined=false ftp_helper_prerouting_defined=false # --- # - FTP out only # --- echononl "\t\tFTP out only" if $allow_ftp_request_out ; then # - Used for different ftp6data recent lists 'ftp6data_$i' # - declare -i i=1 # - (Re)define helper # - if ! $ftp_helper_output_defined ; then $ip6t -A OUTPUT -t raw -p tcp --dport 21 -j CT --helper ftp ftp_helper_output_defined=true fi if $kernel_forward_between_interfaces && ! $ftp_helper_prerouting_defined ; then $ip6t -A PREROUTING -t raw -p tcp --dport 21 -j CT --helper ftp ftp_helper_prerouting_defined=true fi for _dev in ${ext_if_arr[@]} ; do # - Open FTP connection and add the destination ip (--rdest) to ftp6data recent list 'ftp6data_$i'. # - $ip6t -A OUTPUT -o $_dev -p tcp --dport 21 -m state --state NEW \ -m recent --name ftp6data_$i --rdest --set -j ACCEPT # - (2) # - - Accept packets if the destination ip-address (--rdest) is in the 'ftp6data_$i' list (--update) # - and the destination ip-address was seen within the last 1800 seconds (--seconds 1800). # - # - - If matched, the "last seen" timestamp of the destination address will be updated (--update). # - # - - Entries in the ftp6data list not seen in the last 1800 will be removed (--reap). # - $ip6t -A OUTPUT -o $_dev -p tcp -m state --state NEW --dport 1024: \ -m recent --name ftp6data_$i --rdest --update --seconds 1800 --reap -j ACCEPT ((i++)) # - Accept (helper ftp) related connections # - $ip6t -A OUTPUT -m conntrack --ctstate RELATED -m helper --helper ftp -o $_dev -p tcp --dport 1024: -j ACCEPT $ip6t -A INPUT -m conntrack --ctstate RELATED -m helper --helper ftp -i $_dev -p tcp --dport 1024: -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then # ===== # - # - ip_conntrack_ftp cannot see the TLS-encrypted traffic # - ====================================================== # - # - Workaround: # - (1) add (!) desitnatin ip to a 'recent list' named 'ftp6data_$i! if ftp control connections appear # - (2) accept packets of the formaly created recent list 'ftp6data_$i! # - # - Note: # - Use flag '--rdest' to match destination address # - # ===== # - (1) # - # - Open FTP connection and add the destination ip (--rdest) to ftp6data recent list 'ftp6data_$i'. # - $ip6t -A FORWARD -o $_dev -p tcp --dport 21 -m state --state NEW \ -m recent --name ftp6data_$i --rdest --set -j ACCEPT # - (2) # - - Accept packets if the destination ip-address (--rdest) is in the 'ftp6data_$i' list (--update) # - and the destination ip-address was seen within the last 1800 seconds (--seconds 1800). # - # - - If matched, the "last seen" timestamp of the destination address will be updated (--update). # - # - - Entries in the ftp6data list not seen in the last 1800 will be removed (--reap). # - $ip6t -A FORWARD -o $_dev -p tcp -m state --state NEW --dport 1024: \ -m recent --name ftp6data_$i --rdest --update --seconds 1800 --reap -j ACCEPT ((i++)) # - Accept (helper ftp) related connections # - $ip6t -A FORWARD -m conntrack --ctstate RELATED -m helper --helper ftp -o $_dev -p tcp --dport 1024: -j ACCEPT $ip6t -A FORWARD -m conntrack --ctstate RELATED -m helper --helper ftp -i $_dev -p tcp --dport 1024: -j ACCEPT fi done echo_done else echo_skipped fi #if $allow_ftp_request_out ; then # for _dev in ${ext_if_arr[@]} ; do # $ip6t -A OUTPUT -o $_dev -p tcp --dport 21 -m conntrack --ctstate NEW -j ACCEPT # $ip6t -A OUTPUT -o $_dev -p tcp --sport $unprivports --dport $unprivports -m conntrack --ctstate NEW -j ACCEPT # # - Allow active FTP connections from local network # # - # #$ip6t -A INPUT -i $_dev -p tcp --sport 20 -m conntrack --ctstate NEW -j ACCEPT # if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then # $ip6t -A FORWARD -o $_dev -p tcp --dport 21 -m conntrack --ctstate NEW -j ACCEPT # $ip6t -A FORWARD -o $_dev -p tcp --sport $unprivports --dport $unprivports -m conntrack --ctstate NEW -j ACCEPT # fi # # - Allow active FTP connections from local network # # - # $ip6t -A FORWARD -i $_dev -p tcp --sport 20 -m conntrack --ctstate NEW -j ACCEPT # done # # echo_done #else # echo_done #fi # --- # - FTP Service Gateway # --- echononl "\t\tFTP Service Gateway" if $local_ftp_service ; then # ===== # - # - ip_conntrack_ftp cannot see the TLS-encrypted traffic # - ====================================================== # - # - Workaround: # - (1) add source ip to a 'recent list' named 'ftp6service! if ftp control connections appear # - (2) accept packets of the formaly created recent list 'ftp6service! # - # ===== # - (Re)define helper # - # - !! Note: !! # - for both, local FTP server (ftp_server_ip_arr) # - and forward to (extern) FTP server (forward_ftp_server_ip_arr) # - if ! $ftp_helper_prerouting_defined ; then $ip6t -A PREROUTING -t raw -p tcp --dport 21 -j CT --helper ftp ftp_helper_prerouting_defined=true fi # - (1) # - # - Accept initial FTP connection and add the source ip to ftpdata recent list 'ftp6service'. # - $ip6t -A INPUT -p tcp -m state --state NEW --dport 21 -m recent --name ftp6service --set -j ACCEPT # - (2) # - - Accept packets if the source ip-address is in the 'ftp6service' list (--update) and the # - source ip-address was seen within the last 1800 seconds (--seconds 1800). # - # - - If matched, the "last seen" timestamp of the source address will be updated (--update). # - # - - Entries in the ftpdata list not seen in the last 1800 will be removed (--reap). # - $ip6t -A INPUT -p tcp -m state --state NEW --sport 1024: --dport $ftp_passive_port_range \ -m recent --name ftp6service --update --seconds 1800 --reap -j ACCEPT # - Accept (helper ftp) related connections # - $ip6t -A INPUT -m conntrack --ctstate RELATED -m helper --helper ftp -p tcp --dport 1024: -j ACCEPT echo_done else echo_skipped fi # --- # - FTP Services only local Network # --- echononl "\t\tFTP Service local Networks" if [[ ${#ftp_server_only_local_ip_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces ; then # - Used for different ftpdata recent lists 'ftp6data_local_$k' # - declare -i k=1 # - (Re)define helper # - if ! $ftp_helper_output_defined ; then $ip6t -A OUTPUT -t raw -p tcp --dport 21 -j CT --helper ftp ftp_helper_output_defined=true fi if $kernel_forward_between_interfaces && ! $permit_between_local_networks && ! $ftp_helper_prerouting_defined ; then $ip6t -A PREROUTING -t raw -p tcp --dport 21 -j CT --helper ftp ftp_helper_prerouting_defined=true fi for _ip in ${ftp_server_only_local_ip_arr[@]} ; do # - (1) # - # - Open FTP connection and add the destination ip (--rdest) to ftpdata recent list 'ftpdata_$i'. # - $ip6t -A OUTPUT -p tcp -d $_ip --dport 21 --sport 1024: -m state --state NEW \ -m recent --name ftp6data_local_$k --rdest --set -j ACCEPT $ip6t -A FORWARD -d $_ip -p tcp --dport 21 -m state --state NEW \ -m recent --name ftp6data_local_$k --rdest --set -j ACCEPT # - (2) # - - Accept packets if the destination ip-address (--rdest) is in the 'ftpdata_$i' list (--update) # - and the destination ip-address was seen within the last 1800 seconds (--seconds 1800). # - # - - If matched, the "last seen" timestamp of the destination address will be updated (--update). # - # - - Entries in the ftpdata list not seen in the last 1800 will be removed (--reap). # - $ip6t -A OUTPUT -d $_ip -p tcp -m state --state NEW --dport 1024: \ -m recent --name ftp6data_local_$k --rdest --update --seconds 1800 --reap -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then $ip6t -A FORWARD -d $_ip -p tcp -m state --state NEW --dport 1024: \ -m recent --name ftp6data_local_$k --rdest --update --seconds 1800 --reap -j ACCEPT fi ((k++)) # - Accept (helper ftp) related connections # - $ip6t -A OUTPUT -m conntrack --ctstate RELATED -m helper --helper ftp -o $_dev -p tcp --dport 1024: -j ACCEPT $ip6t -A INPUT -m conntrack --ctstate RELATED -m helper --helper ftp -i $_dev -p tcp --dport 1024: -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then $ip6t -A FORWARD -m conntrack --ctstate RELATED -m helper --helper ftp -p tcp -d $_ip --dport 1024: -j ACCEPT $ip6t -A FORWARD -m conntrack --ctstate RELATED -m helper --helper ftp -p tcp -s $_ip --dport 1024: -j ACCEPT fi done echo_done else echo_skipped fi #echononl "\t\tFTP Service local Networks" #if [[ ${#ftp_server_only_local_ip_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces ; then # for _ip in ${ftp_server_only_local_ip_arr[@]} ; do # $ip6t -A OUTPUT -p tcp -d $_ip --dport 21 --sport $unprivports -m conntrack --ctstate NEW -j ACCEPT # # if ! $permit_between_local_networks ; then # $ip6t -A FORWARD -p tcp -d $_ip --dport 21 --sport $unprivports -m conntrack --ctstate NEW -j ACCEPT # fi # # if $local_alias_interfaces ; then # # - Control Port # $ip6t -A FORWARD -p tcp -d $_ip --dport 21 --tcp-flag ACK ACK -j ACCEPT # $ip6t -A FORWARD -p tcp -s $_ip --sport 21 --tcp-flag ACK ACK -j ACCEPT # # - Data Port activ # $ip6t -A FORWARD -p tcp -d $_ip --dport 20 --tcp-flag ACK ACK -j ACCEPT # $ip6t -A FORWARD -p tcp -s $_ip --sport 20 --tcp-flag ACK ACK -j ACCEPT # # - Data Port passiv # $ip6t -A FORWARD -p tcp -d $_ip --sport $unprivports --dport $unprivports --tcp-flag ACK ACK -j ACCEPT # fi # done # # echo_done #else # echo_skipped #fi # --- # - FTP Services DMZ # --- echononl "\t\tFTP Service DMZ" unset no_if_for_ip_arr declare -a no_if_for_ip_arr if [[ ${#ftp_server_dmz_arr[@]} -gt 0 ]] && [[ -n $ftp_passive_port_range ]]; then IFS=':' read -a ftp_passive_port_arr <<< "${ftp_passive_port_range}" for _ip in "${!ftp_server_dmz_arr[@]}"; do # - Skip if no interface is given # - if [[ -z "${ftp_server_dmz_arr[$_ip]}" ]] ; then no_if_for_ip_arr+=("$_ip") continue fi $ip6t -A OUTPUT -p tcp -d $_ip --dport 21 -m conntrack --ctstate NEW -j ACCEPT # - From extern if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -i ${ftp_server_dmz_arr[$_ip]} -p tcp -d $_ip --dport 21 -m conntrack --ctstate NEW -j ACCEPT fi # - From intern if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport 21 -m conntrack --ctstate NEW -j ACCEPT done fi # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then # - Control Port $ip6t -A FORWARD -p tcp -d $_ip --dport 21 --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport 21 --tcp-flag ACK ACK -j ACCEPT # - Data Port activ $ip6t -A FORWARD -p tcp -d $_ip --dport 20 --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport 20 --tcp-flag ACK ACK -j ACCEPT # - Data Port passiv $ip6t -A FORWARD -p tcp -d $_ip --sport $unprivports --dport $ftp_passive_port_range --tcp-flag ACK ACK -j ACCEPT fi done if [[ ${#no_if_for_ip_arr[@]} -gt 0 ]] ; then echo_warning for _ip in ${no_if_for_ip_arr[@]} ; do warn "No Interface given for ip '$_ip'" done else echo_done fi else echo_skipped fi # --- # - TFTF Service out only # --- echononl "\t\tTFTF Service out only" if $allow_tftp_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp --dport $standard_tftp_udp_port -m conntrack --ctstate NEW -j ACCEPT done if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p udp --dport $standard_tftp_udp_port -m conntrack --ctstate NEW -j ACCEPT fi echo_done else echo_skipped fi # --- # - TFTP Service Gateway # --- echononl "\t\tTFTF Service Gateway" if $local_tftp_service ; then $ip6t -A INPUT -p udp --dport $tftp_udp_port -m conntrack --ctstate NEW -j ACCEPT echo_done else echo_skipped fi # --- # - Samba Service only out # --- echononl "\t\tSamba Service only out" if $allow_samba_requests_out && ! $permit_local_net_to_inet ; then for _dev in ${ext_if_arr[@]} ; do for _port in ${samba_udp_ports[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${samba_tcp_ports[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done if $kernel_forward_between_interfaces ; then for _port in ${samba_udp_ports[@]} ; do $ip6t -A FORWARD -o $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${samba_tcp_ports[@]} ; do $ip6t -A FORWARD -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done fi done echo_done else echo_skipped fi # --- # - Samba Service Gateway (only for local Networks) # --- echononl "\t\tSamba Service Gateway (only for local Networks)" if $local_samba_service ; then for _dev in ${local_if_arr[@]} ; do for _port in ${samba_udp_port_arr[@]} ; do $ip6t -A INPUT -i $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${samba_tcp_port_arr[@]} ; do $ip6t -A INPUT -i $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi # --- # - Samba Service only between local Networks # --- echononl "\t\tSamba Service only local Networks" if [[ ${#samba_server_local_ip_arr[@]} -gt 0 ]] ; then for _dev in ${local_if_arr[@]} ; do for _ip in ${samba_server_local_ip_arr[@]} ; do for _port in ${samba_udp_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${samba_tcp_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done if $kernel_forward_between_interfaces && $allow_samba_between_local_nets && ! $permit_between_local_networks ; then for _port in ${samba_udp_port_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${samba_tcp_port_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $local_alias_interfaces ; then for _port in ${samba_tcp_port_arr[@]} ; do $ip6t -A FORWARD -p tcp -d $_ip --dport $_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $_port --tcp-flag ACK ACK -j ACCEPT done fi fi done done echo_done else echo_skipped fi # --- # - Samba Service DMZ # --- echononl "\t\tSamba Service DMZ" unset no_if_for_ip_arr declare -a no_if_for_ip_arr if [[ ${#samba_server_dmz_arr[@]} -gt 0 ]] ; then for _ip in "${!samba_server_dmz_arr[@]}"; do # - Skip if no interface is given # - if [[ -z "${samba_server_dmz_arr[$_ip]}" ]] ; then no_if_for_ip_arr+=("$_ip") continue fi # - From extern if $kernel_forward_between_interfaces ; then for _port in ${samba_udp_port_arr[@]} ; do $ip6t -A FORWARD -i ${samba_server_dmz_arr[$_ip]} -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${samba_tcp_port_arr[@]} ; do $ip6t -A FORWARD -i ${samba_server_dmz_arr[$_ip]} -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done fi # - From intern for _dev in ${local_if_arr[@]} ; do for _port in ${samba_udp_port_arr[@]} ; do $ip6t -A OUTPUT -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then $ip6t -A FORWARD -i $_dev -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT fi done for _port in ${samba_tcp_port_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT fi done # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then for _port in ${samba_tcp_port_arr[@]} ; do $ip6t -A FORWARD -p tcp -d $_ip --dport $_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $_port --tcp-flag ACK ACK -j ACCEPT done fi done done if [[ ${#no_if_for_ip_arr[@]} -gt 0 ]] ; then echo_warning for _ip in ${no_if_for_ip_arr[@]} ; do warn "No Interface given for ip '$_ip'" done else echo_done fi else echo_skipped fi # --- # - LDAP and LDAP SSL Service Gateway (only for local Networks) # --- echononl "\t\tLDAP(S) Service Gateway (only for local Networks)" if $local_ldap_service ; then for _dev in ${local_if_arr[@]} ; do for _port in ${ldap_udp_port_arr[@]} ; do $ip6t -A INPUT -i $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${ldap_tcp_port_arr[@]} ; do $ip6t -A INPUT -i $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi # --- # - LDAP and LDAP SSL Service only between local Networks # --- echononl "\t\tLDAP(S) Service only local Networks" if [[ ${#ldap_server_local_ip_arr[@]} -gt 0 ]] ; then for _dev in ${local_if_arr[@]} ; do for _ip in ${ldap_server_local_ip_arr[@]} ; do for _port in ${ldap_udp_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${ldap_tcp_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done if $kernel_forward_between_interfaces && $allow_ldap_between_local_nets && ! $permit_between_local_networks ; then for _port in ${ldap_udp_port_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${ldap_tcp_port_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $local_alias_interfaces ; then for _port in ${ldap_tcp_port_arr[@]} ; do $ip6t -A FORWARD -p tcp -d $_ip --dport $_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $_port --tcp-flag ACK ACK -j ACCEPT done fi fi done done echo_done else echo_skipped fi # --- # - NTP out only # --- echononl "\t\tNTP Service out only" if $allow_ntp_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp --dport $standard_ntp_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p udp --dport $standard_ntp_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - NTP Service Gateway # --- echononl "\t\tNTP Service Gateway" if $local_ntp_service ; then if ! $allow_ntp_request_out ; then $ip6t -A OUTPUT -o $_dev -p udp --dport $standard_ntp_port -m conntrack --ctstate NEW -j ACCEPT fi $ip6t -A INPUT -p udp --dport $standard_ntp_port -m conntrack --ctstate NEW -j ACCEPT echo_done else echo_skipped fi # --- # - Timeserver (Port 37 NOT NTP!)" # --- echononl "\t\tTimeserver (Port 37 NOT NTP!) out only" if $allow_timeserver_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_timeserver_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_timeserver_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - PGP Keyserver out only # --- echononl "\t\tPGP Keyserver out only" if $allow_pgpserver_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_pgp_keyserver_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_pgp_keyserver_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Telnet # --- echononl "\t\tTelnet (only OUT)" if $allow_telnet_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_telnet_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_telnet_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Whois out only # --- echononl "\t\tWhois out only" if $allow_whois_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_whois_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_whois_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - CPAN Wait only out # --- # - CPAN::WAIT adds some comands to the CPAN shell() to perform searches on # - a WAIT server. It connects to a WAIT server using a simple protocoll # - resembling NNTP as described in RFC977. echononl "\t\tCPAN Wait only out" if $allow_cpan_wait_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_cpan_wait_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_cpan_wait_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - HBCI only out (only forward) # --- echononl "\t\tHBCI only out (only forward)" if $allow_hbci_request_out ; then for _dev in ${ext_if_arr[@]} ; do if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_hbci_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Jabber only out # --- echononl "\t\tJabber only out" if $allow_jabber_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_jabber_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A OUTPUT -o $_dev -p udp --dport $standard_jabber_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_jabber_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -o $_dev -p udp --dport $standard_jabber_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Silc only out # --- echononl "\t\tSilc only out" if $allow_silc_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -p tcp -o $_dev --dport $standard_silc_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_silc_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - IRC (Internet Relay Chat) only out # --- echononl "\t\tIRC only out" if $allow_irc_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -p tcp -o $_dev --dport $standard_irc_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_local_net_to_inet ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_irc_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - MySQL # --- echononl "\t\tMySQL (only OUT)" if $allow_mysql_request_out ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_mysql_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_mysql_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - CUPS only between local Networks (IPP Port 631) # --- echononl "\t\tCUPS/IPP (Port 631) only between local Networks" if $kernel_forward_between_interfaces && ! $permit_between_local_networks && $allow_printing_between_local_nets ; then for _local_dev_1 in ${local_if_arr[@]} ; do for _local_dev_2 in ${local_if_arr[@]} ; do if ! $local_alias_interfaces ; then [[ "$_local_dev_1" = "$_local_dev_2" ]] && continue fi $ip6t -A FORWARD -i $_local_dev_1 -o $_local_dev_2 -p tcp --dport $standard_cups_port -m conntrack --ctstate NEW -j ACCEPT done if $local_alias_interfaces ; then $ip6t -A FORWARD -o $_local_dev_1 -p tcp --dport $standard_cups_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_local_dev_1 -p tcp --sport $standard_cups_port --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Druck Port 9100 (RAW) only out between local Networks # --- echononl "\t\tDruck Port 9100 only between local Networks" if $kernel_forward_between_interfaces && ! $permit_between_local_networks && $allow_printing_between_local_nets ; then for _local_dev_1 in ${local_if_arr[@]} ; do for _local_dev_2 in ${local_if_arr[@]} ; do if ! $local_alias_interfaces ; then [[ "$_local_dev_1" = "$_local_dev_2" ]] && continue fi $ip6t -A FORWARD -i $_local_dev_1 -o $_local_dev_2 -p tcp --dport $standard_print_port -m conntrack --ctstate NEW -j ACCEPT done if $local_alias_interfaces ; then $ip6t -A FORWARD -o $_local_dev_1 -p tcp --dport $standard_print_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_local_dev_1 -p tcp --sport $standard_print_port --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Druck LPD (Port 515) only out between local Networks # --- echononl "\t\tDruck LPD (Port 515) only between local Networks" if $kernel_forward_between_interfaces && ! $permit_between_local_networks && $allow_printing_between_local_nets ; then for _local_dev_1 in ${local_if_arr[@]} ; do for _local_dev_2 in ${local_if_arr[@]} ; do if ! $local_alias_interfaces ; then [[ "$_local_dev_1" = "$_local_dev_2" ]] && continue fi $ip6t -A FORWARD -i $_local_dev_1 -o $_local_dev_2 -p tcp --dport $standard_print_raw_port -m conntrack --ctstate NEW -j ACCEPT done if $local_alias_interfaces ; then $ip6t -A FORWARD -o $_local_dev_1 -p tcp --dport $standard_print_raw_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_local_dev_1 -p tcp --sport $standard_print_raw_port --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Printer # --- echononl "\t\tKnown Printers (Ports: 515/631/9100) only local Networks" if [[ ${#printer_ip_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces \ && ! $permit_between_local_networks \ && ! $allow_printing_between_local_nets ; then for _ip in ${printer_ip_arr[@]} ; do for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $standard_print_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $standard_ipp_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $standard_print_raw_port -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -o $_dev -p tcp -d $_ip --dport $standard_print_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_dev -p tcp -s $_ip --sport $standard_print_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_dev -p tcp -d $_ip --dport $standard_ipp_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_dev -p tcp -s $_ip --sport $standard_ipp_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_dev -p tcp -d $_ip --dport $standard_print_raw_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_dev -p tcp -s $_ip --sport $standard_print_raw_port --tcp-flag ACK ACK -j ACCEPT fi done done echo_done else echo_skipped fi # --- # - Scanner # --- echononl "\t\tBrother Scanner (Port $brscan_port) only between local Networks" if [[ ${#brother_scanner_ip_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces \ && ! $permit_between_local_networks \ && $allow_scanning_between_local_nets ; then for _ip in ${brother_scanner_ip_arr[@]} ; do for _dev in ${local_if_arr[@]} ; do # - UDP $ip6t -A FORWARD -i $_dev -p udp -d $_ip --dport $brscan_port -m conntrack --ctstate NEW -j ACCEPT # - TCP $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $brscan_port -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -o $_dev -p tcp -d $_ip --dport $brscan_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_dev -p tcp -s $_ip --sport $brscan_port --tcp-flag ACK ACK -j ACCEPT fi done done echo_done else echo_skipped fi # --- # - Other local Services # --- echononl "\t\tOther local Services" if [[ ${#other_service_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces ; then for _val in ${other_service_arr[@]} ; do IFS=',' read -a _val_arr <<< "${_val}" for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p ${_val_arr[2]} -d ${_val_arr[0]} --dport ${_val_arr[1]} -m conntrack --ctstate NEW -j ACCEPT # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces && [[ "${_val_arr[2]}" = "tcp" ]] ; then $ip6t -A FORWARD -i $_dev -p tcp -d ${_val_arr[0]} --dport ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -o $_dev -p tcp -s ${_val_arr[0]} --sport ${_val_arr[1]} --tcp-flag ACK ACK -j ACCEPT fi done done echo_ok else echo_skipped fi # --- # - Rsync only Out Gateway # --- echononl "\t\tRsync (only OUT) Gateway" if $local_rsync_out ; then for _dev in ${ext_if_arr[@]} ; do for _port in ${rsync_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi # --- # - Rsync only Out from given local machines # --- echononl "\t\tRsync Out from given local machines" if [[ ${#rsync_out_ip_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces $$ ! $permit_local_net_to_inet; then for _port in ${rsync_port_arr[@]} ; do for _ip in ${rsync_out_ip_arr[@]} ; do $ip6t -A FORWARD -p tcp -s $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done done echo_done else echo_skipped fi # --- # - SNMP Services local Networks # --- echononl "\t\tSNMP Services local Networks" if [[ ${#snmp_server_ip_arr[@]} -gt 0 ]] ; then for _ip in ${snmp_server_ip_arr[@]} ; do $ip6t -A OUTPUT -p udp -d $_ip --dport $snmp_trap_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p udp -s $_ip --dport $snmp_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -i $_dev -p udp -d $_ip --dport $snmp_trap_port -m conntrack --ctstate NEW -j ACCEPT done fi done echo_done else echo_skipped fi # --- # - WakeOnLan only out into local Networks # --- echononl "\t\tWakeOnLan only out into local Networks" $ip6t -A OUTPUT -p udp --dport 9 -j ACCEPT echo_done # --- # - NFS Service (portmapper, mountd, nfs) # --- if $terminal; then echononl "\t\tNFS Service\t\t\t - \033[37m\033[1mNot yet implemented\033[m -" echo -e "\033[75G[ \033[37mskipped\033[m ]" echononl "\t\tVoIP\t\t\t\t - \033[37m\033[1mNot yet implemented\033[m -" echo -e "\033[75G[ \033[37mskipped\033[m ]" echononl "\t\tSip\t\t\t\t - \033[37m\033[1mNot yet implemented\033[m -" echo -e "\033[75G[ \033[37mskipped\033[m ]" echononl "\t\tSkype\t\t\t\t - \033[37m\033[1mNot yet implemented\033[m -" echo -e "\033[75G[ \033[37mskipped\033[m ]" else echo "NFS Service - Not yet implemented" echo "VoIP - Not yet implemented" echo "Sip - Not yet implemented" echo "Skype - Not yet implemented" fi # --- # - PowerChute Network Shutdown local Network # --- echononl "\t\tPowerChute Network Shutdown local Network" if [[ ${#pcns_server_ip_arr[@]} -gt 0 ]] && [[ -n "$usv_ip" ]] ; then for _ip in ${pcns_server_ip_arr[@]} ; do if containsElement "$_ip" "${gateway_ipv6_address_arr[@]}" ; then $ip6t -A OUTPUT -p tcp -s $_ip -d $usv_ip -m multiport --dports $http_ports -m conntrack --ctstate NEW -j ACCEPT $ip6t -A INPUT -p tcp -s $usv_ip --dport $pcns_tcp_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A INPUT -p udp -s $usv_ip --dport $pcns_udp_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A INPUT -p tcp --dport $pcns_web_port -m conntrack --ctstate NEW -j ACCEPT fi if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then $ip6t -A FORWARD -p tcp -s $usv_ip -d $_ip --dport $pcns_tcp_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -p udp -s $usv_ip -d $_ip --dport $pcns_udp_port -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -p tcp -d $_ip --dport $pcns_web_port -m conntrack --ctstate NEW -j ACCEPT fi if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip --dport $pcns_tcp_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $pcns_tcp_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -d $_ip --dport $pcns_web_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $pcns_web_port --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Ubiquiti Unifi Controller (Accesspoints) Gateway # --- echononl "\t\tUbiquiti Unifi Controller Gateway" if $local_unifi_controller_service ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A INPUT -p udp -i $_dev -m multiport --dports $unify_broadcast_udp_ports -m conntrack --ctstate NEW -j ACCEPT $ip6t -A INPUT -p tcp -i $_dev -m multiport --dports $unify_tcp_ports -m conntrack --ctstate NEW -j ACCEPT $ip6t -A INPUT -p udp -i $_dev -m multiport --dports $unify_udp_ports -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi echononl "\t\tUbiquiti Unifi Controller Gateway - STUN to Unifi APs" if $local_unifi_controller_service ; then if [[ ${#unifi_ap_local_ip_arr[@]} -gt 0 ]] ; then for _ip_ap in ${unifi_ap_local_ip_arr[@]} ; do $ip6t -A OUTPUT -p udp -d $_ip_ap -m multiport --sports $unify_udp_ports -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped warn "Local Unifi Controller is defined, but no Unifi APs!" fi else echo_skipped fi # --- # - Ubiquiti Unifi Controller (Accesspoints) local Network # --- echononl "\t\tUbiquiti Unifi Controller (Accesspoints) local Network" if [[ ${#unify_controller_local_net_ip_arr[@]} -gt 0 ]] \ && $kernel_forward_between_interfaces \ && ! $permit_between_local_networks ; then for _ip_ctl in ${unify_controller_local_net_ip_arr[@]} ; do for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p udp -d $_ip_ctl -m multiport --dports $unify_broadcast_udp_ports -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -i $_dev -p tcp -d $_ip_ctl -m multiport --dports $unify_tcp_ports -m conntrack --ctstate NEW -j ACCEPT $ip6t -A FORWARD -i $_dev -p udp -d $_ip_ctl -m multiport --dports $unify_udp_ports -m conntrack --ctstate NEW -j ACCEPT done # - Note: # - If (local) alias interfaces like eth1:0 in use, youe need a further # - special rule. # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip_ctl -m multiport --dports $unify_tcp_ports --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip_ctl -m multiport --sports $unify_tcp_ports --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - IPMI Tools (e.g. IPMIView) only out # --- echononl "\t\tIPMI Tools (e.g. IPMIView) only out" if $allow_ipmi_request_out && ! $permit_local_net_to_inet ; then for _dev in ${ext_if_arr[@]} ; do for _port in ${ipmi_udp_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${ipmi_tcp_port_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done if $kernel_forward_between_interfaces ; then for _port in ${ipmi_udp_port_arr[@]} ; do $ip6t -A FORWARD -o $_dev -p udp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${ipmi_tcp_port_arr[@]} ; do $ip6t -A FORWARD -o $_dev -p tcp --dport $_port -m conntrack --ctstate NEW -j ACCEPT done fi done echo_done else echo_skipped fi # --- # - IPMI Tools (e.g. IPMIView) local Networks # --- echononl "\t\tIPMI Tools (e.g. IPMIView) local Networks" if [[ ${#ipmi_server_ip_arr[@]} -gt 0 ]]; then for _ip in ${ipmi_server_ip_arr[@]} ; do for _port in ${ipmi_udp_port_arr[@]} ; do $ip6t -A OUTPUT -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${ipmi_tcp_port_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _port in ${ipmi_udp_port_arr[@]} ; do $ip6t -A FORWARD -p udp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${ipmi_tcp_port_arr[@]} ; do $ip6t -A FORWARD -p tcp -d $_ip --dport $_port -m conntrack --ctstate NEW -j ACCEPT done # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $local_alias_interfaces ; then for _port in ${ipmi_udp_port_arr[@]} ; do $ip6t -A FORWARD -p udp -s $_ip --sport $_port -m conntrack --ctstate NEW -j ACCEPT done for _port in ${ipmi_tcp_port_arr[@]} ; do $ip6t -A FORWARD -p tcp -d $_ip --dport $_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $_port --tcp-flag ACK ACK -j ACCEPT done fi fi done echo_done else echo_skipped fi # --- # - Remote Console (VNC) only out # --- echononl "\t\tRemote Console (VNC) only out" if $allow_remote_console_request_out && ! $permit_local_net_to_inet ; then for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $standard_remote_console_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_dev -p tcp --dport $standard_remote_console_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Remote Console (VNC) local Networks # --- echononl "\t\tRemote Console (VNC) local Networks" if [[ ${#rm_server_ip_arr[@]} -gt 0 ]]; then for _ip in ${rm_server_ip_arr[@]} ; do $ip6t -A OUTPUT -p tcp -d $_ip --dport $remote_console_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then $ip6t -A FORWARD -p tcp -d $_ip --dport $remote_console_port -m conntrack --ctstate NEW -j ACCEPT # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip --dport $remote_console_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $remote_console_port --tcp-flag ACK ACK -j ACCEPT fi fi done echo_done else echo_skipped fi # --- # - Remote Console (VNC) DMZ # --- echononl "\t\tRemote Console (VNC) DMZ" unset no_if_for_ip_arr declare -a no_if_for_ip_arr if [[ ${#rm_server_dmz_arr[@]} -gt 0 ]] ; then for _ip in ${!rm_server_dmz_arr[@]} ; do # - Skip if no interface is given # - if [[ -z "${rm_server_dmz_arr[$_ip]}" ]] ; then no_if_for_ip_arr+=("$_ip") continue fi # - From Gateway $ip6t -A OUTPUT -p tcp -d $_ip --dport $remote_console_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces ; then # - From extern $ip6t -A FORWARD -i ${rm_server_dmz_arr[$_ip]} -p tcp -d $_ip --dport $remote_console_port -m conntrack --ctstate NEW -j ACCEPT # - From intern if ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $remote_console_port -m conntrack --ctstate NEW -j ACCEPT done fi # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip --dport $remote_console_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $remote_console_port --tcp-flag ACK ACK -j ACCEPT fi fi done if [[ ${#no_if_for_ip_arr[@]} -gt 0 ]] ; then echo_warning for _ip in ${no_if_for_ip_arr[@]} ; do warn "No Interface given for ip '$_ip'" done else echo_done fi else echo_skipped fi # --- # - Munin Service Gateway # --- echononl "\t\tMunin Service Gateway" if $local_munin_server ; then if $provide_munin_service_to_inet ; then # - Provide Service for local and extern networks # - $ip6t -A OUTPUT -p tcp --dport $munin_remote_port -m conntrack --ctstate NEW -j ACCEPT else # - Provide Service only for for local network # - for _dev in ${local_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p tcp --dport $munin_remote_port -m conntrack --ctstate NEW -j ACCEPT done fi echo_done else echo_skipped fi # --- # - Munin Service local Networks # --- echononl "\t\tMunin Service local Networks" if [[ ${#munin_local_server_ip_arr[@]} -gt 0 ]] ; then for _ip in ${munin_local_server_ip_arr[@]} ; do $ip6t -A INPUT -s $_ip -p tcp --dport $munin_local_port -m conntrack --ctstate NEW -j ACCEPT if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do if ! $permit_between_local_networks ; then $ip6t -A FORWARD -i $_dev -s $_ip -p tcp --dport $munin_local_port -m conntrack --ctstate NEW -j ACCEPT fi done fi # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip --sport $munin_local_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --dport $munin_local_port --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # --- # - Munin remote Server # --- echononl "\t\tMunin remote Server" if [[ -n $munin_remote_server ]] && [[ ${#munin_local_client_ip_arr[@]} -gt 0 ]]; then for _ip in ${!munin_local_client_ip_arr[@]} ; do if containsElement "$_ip" "${gateway_ipv6_address_arr[@]}" ; then $ip6t -A INPUT -i ${munin_local_client_ip_arr[$_ip]} -p tcp -s $munin_remote_server --dport $munin_local_port -m conntrack --ctstate NEW -j ACCEPT elif $kernel_forward_between_interfaces ; then $ip6t -t nat -A PREROUTING -i ${munin_local_client_ip_arr[$_ip]} -p tcp -s $munin_remote_server --dport $munin_local_port -j DNAT --to $_ip:$munin_local_port $ip6t -A FORWARD -i ${munin_local_client_ip_arr[$_ip]} -p tcp -s $munin_remote_server -d $_ip --dport $munin_local_port -m conntrack --ctstate NEW -j ACCEPT fi done echo_done else echo_skipped fi # --- # - XyMon local service # --- echononl "\t\tXyMon Service Gateway" if $local_xymon_server ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A INPUT -i $_dev -p tcp --dport $xymon_port -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - XyMon Service Intranet # --- echononl "\t\tXyMon Service Intranet" if [[ ${#xymon_server_ip_arr[@]} -gt 0 ]] ; then for _ip in ${xymon_server_ip_arr[@]} ; do if $local_xymon_client ; then $ip6t -A OUTPUT -p tcp -d $_ip --dport $xymon_port -m conntrack --ctstate NEW -j ACCEPT fi if $kernel_forward_between_interfaces && ! $permit_between_local_networks ; then for _dev in ${local_if_arr[@]} ; do $ip6t -A FORWARD -i $_dev -p tcp -d $_ip --dport $xymon_port -m conntrack --ctstate NEW -j ACCEPT done fi # - Rule is needed if (local) interface aliases in use (like eth0:1) # - if $kernel_forward_between_interfaces && $local_alias_interfaces ; then $ip6t -A FORWARD -p tcp -d $_ip --dport $xymon_port --tcp-flag ACK ACK -j ACCEPT $ip6t -A FORWARD -p tcp -s $_ip --sport $xymon_port --tcp-flag ACK ACK -j ACCEPT fi done echo_done else echo_skipped fi # ------------- # --- Portforwarding # ------------- # --- # - Portforwarding TCP # --- echo echononl "\tPortforwarding TCP" if [[ ${#portforward_tcp_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces ; then for _val in "${portforward_tcp_arr[@]}" ; do # - Split value # - IFS=',' read -a _val_arr <<< "${_val}" # - DNAT # - if [[ "${_val_arr[1]}" = "${_val_arr[3]}" ]] ; then $ip6t -t nat -A PREROUTING -i ${_val_arr[0]} -p tcp --dport ${_val_arr[1]} -m conntrack --ctstate NEW -j DNAT --to-destination ${_val_arr[2]} else $ip6t -t nat -A PREROUTING -i ${_val_arr[0]} -p tcp --dport ${_val_arr[1]} -m conntrack --ctstate NEW -j DNAT --to-destination [${_val_arr[2]}]:${_val_arr[3]} fi # - Allow Packets # - $ip6t -A FORWARD -i ${_val_arr[0]} -p tcp -d ${_val_arr[2]} --dport ${_val_arr[3]} -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - Portforwarding UDP # --- echononl "\tPortforwarding UDP" if [[ ${#portforward_udp_arr[@]} -gt 0 ]] && $kernel_forward_between_interfaces ; then for _val in "${portforward_udp_arr[@]}" ; do # - Split value # - IFS=',' read -a _val_arr <<< "${_val}" # - DNAT # - if [[ "${_val_arr[1]}" = "${_val_arr[3]}" ]] ; then $ip6t -t nat -A PREROUTING -i ${_val_arr[0]} -p udp --dport ${_val_arr[1]} -m conntrack --ctstate NEW -j DNAT --to-destination ${_val_arr[2]} else $ip6t -t nat -A PREROUTING -i ${_val_arr[0]} -p udp --dport ${_val_arr[1]} -m conntrack --ctstate NEW -j DNAT --to-destination [${_val_arr[2]}]:${_val_arr[3]} fi # - Allow Packets # - $ip6t -A FORWARD -i ${_val_arr[0]} -p udp -d ${_val_arr[2]} --dport ${_val_arr[3]} -m conntrack --ctstate NEW -j ACCEPT done echo_done else echo_skipped fi # --- # - UNIX Traceroute # --- echo echononl "\tUNIX Traceroute" # versendet udp packete im gegensatz zu tracert von windows # der icmp-echo-request pakete versendet # einige implementierungen von traceroute (linux) erm�lichens # die option -I und versenden dann ebenfalls icmp-echo-request pakete for _dev in ${ext_if_arr[@]} ; do $ip6t -A OUTPUT -o $_dev -p udp -m conntrack --ctstate NEW --dport 33434:33530 -j ACCEPT $ip6t -A INPUT -i $_dev -p udp -m conntrack --ctstate NEW --dport 33434:33530 -j ACCEPT if $kernel_forward_between_interfaces ; then $ip6t -A FORWARD -o $_dev -p udp -m conntrack --ctstate NEW --dport 33434:33530 -j ACCEPT $ip6t -A FORWARD -i $_dev -p udp -m conntrack --ctstate NEW --dport 33434:33530 -j ACCEPT fi done echo_done # ------------- # --- ICMP Traffic (i.e. ping requests) # ------------- # --- # - ICMP is configured above.. # --- # --- # - Deny between local networks # --- echo echononl "\tDeny all traffic between local networks.." if $kernel_forward_between_interfaces ; then if ! $permit_between_local_networks ; then for _dev_1 in ${local_if_arr[@]} ; do for _dev_2 in ${local_if_arr[@]} ; do if $log_rejected || $log_all ; then $ip6t -A FORWARD -i $_dev_1 -o $_dev_2 -j LOG --log-prefix "$log_prefix Rejected local NET: " --log-level $log_level fi $ip6t -A FORWARD -i $_dev_1 -o $_dev_2 -p ALL -m conntrack --ctstate NEW -j DROP done done echo_done else echo_skipped fi else echo_skipped fi # ------------- # --- Log traffic not matched so far # ------------- echo echononl "\tLog traffic not matched so far.." if $log_rejected || $log_all ; then $ip6t -A OUTPUT -j LOG --log-prefix "$log_prefix OUT Rejected: " --log-level $log_level $ip6t -A INPUT -j LOG --log-prefix "$log_prefix IN Rejected: " --log-level $log_level $ip6t -A FORWARD -j LOG --log-prefix "$log_prefix FORWARD Rejected: " --log-level $log_level #$ip6t -A OUTPUT -m limit --limit-burst 5 -j LOG --log-prefix "$log_prefix OUT Rejected: " --log-level $log_level #$ip6t -A INPUT -m limit --limit-burst 5 -j LOG --log-prefix "$log_prefix IN Rejected: " --log-level $log_level #$ip6t -A FORWARD -m limit --limit-burst 5 -j LOG --log-prefix "$log_prefix FORWARD Rejected: " --log-level $log_level echo_done else echo_skipped fi # ------------- # --- DROP traffic not matched so far # ------------- echononl "\tDROP traffic not matched so far.." # - drop all other for all interfaces.. # $ip6t -A INPUT -j DROP $ip6t -A OUTPUT -j DROP $ip6t -A FORWARD -j DROP # # ---------- Ende: DROP ---------- echo_done # --- # - Warning, if no intern (local) interface is configured # --- if [[ ${#local_if_arr[@]} -lt 1 ]] ; then echo "" echo "" if $terminal ; then echo -e "\t\033[33m\033[1m----------\033[m" else echo "----------" fi warn "No local Interface is configured!" if $terminal ; then echo -e "\t\033[33m\033[1m----------\033[m" else echo "----------" fi fi echo exit 0