File: //etc/fw_security/sysconf/ipsec_passthrough.pattern
-I VPN_PASSTHROUGH -i lbr0 -o INTERFACE -p udp --dport 500 -j ACCEPT
-I VPN_PASSTHROUGH -i INTERFACE -o lbr0 -p udp --dport 500 -j ACCEPT
-I VPN_PASSTHROUGH -i lbr0 -o INTERFACE -p udp --dport 4500 -j ACCEPT
-I VPN_PASSTHROUGH -i INTERFACE -o lbr0 -p udp --dport 4500 -j ACCEPT
-I VPN_PASSTHROUGH -i lbr0 -o INTERFACE -p 50 -j ACCEPT
-I VPN_PASSTHROUGH -i INTERFACE -o lbr0 -p 50 -j ACCEPT
-I VPN_PASSTHROUGH -i lbr0 -o INTERFACE -p 51 -j ACCEPT
-I VPN_PASSTHROUGH -i INTERFACE -o lbr0 -p 51 -j ACCEPT