diff options
Diffstat (limited to 'templates-cfg/system/conntrack/tcp/loose/node.def')
| -rw-r--r-- | templates-cfg/system/conntrack/tcp/loose/node.def | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/templates-cfg/system/conntrack/tcp/loose/node.def b/templates-cfg/system/conntrack/tcp/loose/node.def new file mode 100644 index 0000000..06706a2 --- /dev/null +++ b/templates-cfg/system/conntrack/tcp/loose/node.def @@ -0,0 +1,50 @@ +# +# This parameter directs the netfilter TCP connection tracking modules +# (nf_conntrack, and others) to either allow or disallow the tracking +# of TCP connections which are "previously established". This +# includes all cases where the three-way connection opening handshake +# was not seen by this machine. That includes the case the connection +# was opened before this machine booted. It also includes cases where +# the packets comprising the three-way handshake were routed via some +# other router. +# +# If this parameter is set to "enable", tracking such connections is +# allowed. If disabled, such tracking is disabled. +# default value - 1 + +type: txt + +help: Policy to track previously established connections + +val_help: enable; Allow tracking of previously established connections +val_help: disable; Do not allow tracking of previously established connections + +default: "enable" + +syntax:expression: $VAR(@) in "enable", "disable"; "must be either enable or disable" + +update: + if [ ! -e /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_loose ]; then + sudo modprobe nf_conntrack_ipv4 + fi + if [ "$VAR(@)" = "enable" ]; then + sudo sysctl -q -w net/ipv4/netfilter/ip_conntrack_tcp_loose=1 + elif [ "$VAR(@)" = "disable" ]; then + sudo sysctl -q -w net/ipv4/netfilter/ip_conntrack_tcp_loose=0 + else + echo "Invalid parameter: $VAR(@)" + exit 1 + fi + +delete: + if [ ! -e /proc/sys/net/ipv4/netfilter/ip_conntrack_tcp_loose ]; then + sudo modprobe nf_conntrack_ipv4 + fi + sudo sysctl -q -w net/ipv4/netfilter/ip_conntrack_tcp_loose=1 + + + + + + + |