firewall/ipt-gateway
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Its now possible to define port range at 'Allow extern service from given local network' instead of a single port.

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This commit is contained in:
Christoph
2026-03-03 15:50:51 +01:00
parent a5b226284a
commit 1f5c01d8c9
4 changed files with 36 additions and 9 deletions
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4
conf/main_ipv4.conf.sample
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@@ -378,9 +378,11 @@ allow_local_if_to_ext_net=""
# - # -
# - All traffic from the given (local) network to the given (extern) service is allowed # - All traffic from the given (local) network to the given (extern) service is allowed
# - # -
# - It's possible to give a port range. use the hyphen as the connecting character, like '3306-3308'
# -
# - Example: # - Example:
# - allow_local_net_to_ext_service="192.168.63.0/24:83.223.86.98:3306:tcp # - allow_local_net_to_ext_service="192.168.63.0/24:83.223.86.98:3306:tcp
# - 192.168.64.0/24:83.223.86.98:3306:tcp" # - 192.168.64.0/24:83.223.86.98:3306-3308:tcp"
# - # -
# - Blank separated list # - Blank separated list
# - # -

7
conf/main_ipv6.conf.sample
View File

@@ -363,9 +363,12 @@ allow_local_if_to_ext_net=""
# - # -
# - All traffic from the given (local) network to the given (extern) service is allowed # - All traffic from the given (local) network to the given (extern) service is allowed
# - # -
# - It's possible to givbe a port range like '3306:3308"
# -
# - Example: # - Example:
# - allow_local_net_to_ext_service="2003:ec:df10:49fd:fd34:b41c:c667:fe79/64,2a01:30:0:13:211:84ff:feb7:7f9c,3306,tcp # - allow_local_net_to_ext_service="
# - 2003:ec:df10:49fe:ec4:7aff:feac:5ece/64,2a01:30:0:13:211:84ff:feb7:7f9c,3306,tcp" # - 2003:ec:df10:49fd:fd34:b41c:c667:fe79/64,2a01:30:0:13:211:84ff:feb7:7f9c,3306,tcp
# - 2003:ec:df10:49fe:ec4:7aff:feac:5ece/64,2a01:30:0:13:211:84ff:feb7:7f9c,3306:3308,tcp"
# - # -
# - Blank separated list # - Blank separated list
# - # -

18
ip6t-firewall-gateway
View File

@@ -1823,7 +1823,17 @@ if [[ ${#allow_local_net_to_ext_service_arr[@]} -gt 0 ]] \
for _val in "${allow_local_net_to_ext_service_arr[@]}" ; do for _val in "${allow_local_net_to_ext_service_arr[@]}" ; do
IFS=',' read -a _val_arr <<< "${_val}" IFS=',' read -a _val_arr <<< "${_val}"
$ip6t -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[0]} -d ${_val_arr[1]} --dport ${_val_arr[2]} -m conntrack --ctstate NEW -j ACCEPT
# if the port range is specified with a hyphen instead of a colon
#
if [[ "${_val_arr[2]}" =~ ^[^-]*-[^-]*$ ]]; then
_ports="${_val_arr[2]/-/:}"
else
_ports="${_val_arr[2]}"
fi
$ip6t -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[0]} -d ${_val_arr[1]} \
-m multiport --dports ${_ports} -m conntrack --ctstate NEW -j ACCEPT
# - Note: # - Note:
# - If (local) alias interfaces like eth1:0 in use, youe need a further # - If (local) alias interfaces like eth1:0 in use, youe need a further
@@ -1831,8 +1841,10 @@ if [[ ${#allow_local_net_to_ext_service_arr[@]} -gt 0 ]] \
# - # -
if $local_alias_interfaces ; then if $local_alias_interfaces ; then
if [[ "${_val_arr[3]}" = "tcp" ]]; 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]} -d ${_val_arr[1]} \
$ip6t -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[1]} --sport ${_val_arr[2]} --tcp-flag ACK ACK -j ACCEPT -m multiport --dports ${_ports} --tcp-flag ACK ACK -j ACCEPT
$ip6t -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[1]} \
-m multiport --sports ${_ports} --tcp-flag ACK ACK -j ACCEPT
fi fi
fi fi
done done

16
ipt-firewall-gateway
View File

@@ -2564,7 +2564,17 @@ if [[ ${#allow_local_net_to_ext_service_arr[@]} -gt 0 ]] \
for _val in "${allow_local_net_to_ext_service_arr[@]}" ; do for _val in "${allow_local_net_to_ext_service_arr[@]}" ; do
IFS=':' read -a _val_arr <<< "${_val}" IFS=':' read -a _val_arr <<< "${_val}"
$ipt -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[0]} -d ${_val_arr[1]} --dport ${_val_arr[2]} -m conntrack --ctstate NEW -j ACCEPT
# Is a port range given?
#
if [[ "${_val_arr[2]}" =~ ^[^-]*-[^-]*$ ]]; then
_ports="${_val_arr[2]/-/:}"
else
_ports="${_val_arr[2]}"
fi
$ipt -A FORWARD -p ${_val_arr[3]} -s ${_val_arr[0]} -d ${_val_arr[1]} \
-m multiport --dports ${_ports} -m conntrack --ctstate NEW -j ACCEPT
# - Note: # - Note:
# - If (local) alias interfaces like eth1:0 in use, youe need a further # - If (local) alias interfaces like eth1:0 in use, youe need a further
@@ -2572,8 +2582,8 @@ if [[ ${#allow_local_net_to_ext_service_arr[@]} -gt 0 ]] \
# - # -
if $local_alias_interfaces ; then if $local_alias_interfaces ; then
if [[ "${_val_arr[3]}" = "tcp" ]]; then if [[ "${_val_arr[3]}" = "tcp" ]]; then
$ipt -A FORWARD -p tcp -d ${_val_arr[1]} --dport ${_val_arr[2]} --tcp-flag ACK ACK -j ACCEPT $ipt -A FORWARD -p tcp -d ${_val_arr[1]} -m multiport --dports ${_ports} --tcp-flag ACK ACK -j ACCEPT
$ipt -A FORWARD -p tcp -s ${_val_arr[1]} --sport ${_val_arr[2]} --tcp-flag ACK ACK -j ACCEPT $ipt -A FORWARD -p tcp -s ${_val_arr[1]} -m multiport --sports ${_ports} --tcp-flag ACK ACK -j ACCEPT
fi fi
fi fi
done done