60 lines
1.7 KiB
Plaintext
60 lines
1.7 KiB
Plaintext
# =============
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# - Load Kernel Modules
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# =============
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ip_tables
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iptable_nat
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# - Note:!
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# - Since Kernel 4.7 the automatic conntrack helper assignment
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# - is disabled by default (net.netfilter.nf_conntrack_helper = 0).
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# - Enable it by setting this variable in file /etc/sysctl.conf:
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# -
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# - net.netfilter.nf_conntrack_helper = 1
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# -
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# - Reboot or type "sysctl -p"
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# -
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# - !! But this is NOT the recommend method !!
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# ---
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# - Load module for FTP Connection tracking and NAT
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# ---
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# - Once a helper is loaded, it will treat packets for a given port and all IP addresses.
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# - As explained before, this is not optimal and is even a security risk. A better
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# - solution is to load the module helper and deactivate their parsing by default. Each
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# - helper we need to use is then set by using a call to the CT target.
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# -
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# - Desactivate the automatic conntrack helper assignment:
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# -
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# - method 1: modprobe nf_conntrack nf_conntrack_helper=0
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# - method 2: echo 0 > /proc/sys/net/netfilter/nf_conntrack_helper
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# -
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# - Note:
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# - =====
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# - Each helper we need to use is then set by using a call to the CT target.
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# - Example for ftp helper on standardport:
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# -
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# - ipt -A OUTPUT -t raw -p tcp --dport 21 -j CT --helper ftp
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# -
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/sbin/modprobe nf_conntrack nf_conntrack_helper=0 > /dev/null 2>&1
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/sbin/modprobe nf_conntrack_ftp > /dev/null 2>&1
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/sbin/modprobe nf_nat > /dev/null 2>&1
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/sbin/modprobe nf_nat_ftp > /dev/null 2>&1
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## - Load modules for SIP VOIP
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## -
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#/sbin/modprobe nf_conntrack_sip > /dev/null 2>&1
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#/sbin/modprobe nf_nat_sip > /dev/null 2>&1
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# - Load kernel nf_log modules for IPv4 netfilter userspace logging
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# -
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# - Note:
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# - netfilter userspace logging daemon (ulogd/ulogd2) is required
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# -
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nf_log
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nf_log_ipv4
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