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Diffstat (limited to 'package/iptables/files/firewall6.conf')
-rw-r--r-- | package/iptables/files/firewall6.conf | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/package/iptables/files/firewall6.conf b/package/iptables/files/firewall6.conf new file mode 100644 index 000000000..2e86138b2 --- /dev/null +++ b/package/iptables/files/firewall6.conf @@ -0,0 +1,98 @@ +#!/bin/sh +echo "configure /etc/firewall6.conf first." +exit 1 + +### Interfaces +WAN=sixxs +LAN=br0 +WLAN=wlan0 + +###################################################################### +### Default ruleset +###################################################################### + +### Create chains +ip6tables -N input_rule +ip6tables -N forwarding_rule + +### Default policy +ip6tables -P INPUT DROP +ip6tables -P FORWARD DROP +ip6tables -P OUTPUT DROP + +### INPUT +### (connections with the router as destination) + +# base case +ip6tables -A INPUT -m state --state INVALID -j DROP +ip6tables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT +ip6tables -A INPUT -p tcp --tcp-flags SYN SYN \! --tcp-option 2 -j DROP + +# custom rules +ip6tables -A INPUT -j input_rule + +# allow access from anything but WAN +ip6tables -A INPUT ${WAN:+\! -i $WAN} -j ACCEPT +# allow icmp messages +ip6tables -A INPUT -p icmp6 -j ACCEPT + +# reject +ip6tables -A INPUT -p tcp -j REJECT --reject-with tcp-reset +ip6tables -A INPUT -j REJECT --reject-with icmp6-port-unreachable + +### OUTPUT +### (connections with the router as source) + +# base case +ip6tables -A OUTPUT -m state --state RELATED,ESTABLISHED,NEW -j ACCEPT +ip6tables -A OUTPUT -p icmp6 -j ACCEPT + +### FORWARD +### (connections routed through the router) + +# base case +ip6tables -A FORWARD -m state --state INVALID -j DROP +ip6tables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT + +# fix for broken ISPs blocking ICMPv6 "packet too big" packets +#ip6tables -t mangle -A FORWARD -p tcp -o $WAN --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu + +# custom rules +ip6tables -A FORWARD -j forwarding_rule + +# allow LAN +ip6tables -A FORWARD -i $LAN -o $WAN -j ACCEPT + +###################################################################### +### Default ruleset end +###################################################################### + +### +### Connections to the router +### + +# ssh +#ip6tables -A input_rule -i $WAN -p tcp -s <a.b.c.d> --dport 22 -j ACCEPT + +# IPSec +#ip6tables -A input_rule -i $WAN -p esp -s <a.b.c.d> -j ACCEPT +#ip6tables -A input_rule -i $WAN -p udp -s <a.b.c.d> --dport 500 -j ACCEPT + +# OpenVPN +#ip6tables -A input_rule -i $WAN -p udp -s <a.b.c.d> --dport 1194 -j ACCEPT + +# PPTP +#ip6tables -A input_rule -i $WAN -p gre -j ACCEPT +#ip6tables -A input_rule -i $WAN -p tcp --dport 1723 -j ACCEPT + +### +### VPN traffic +### + +# IPSec +#ip6tables -A forwarding_rule -o ipsec+ -j ACCEPT +#ip6tables -A forwarding_rule -i ipsec+ -j ACCEPT + +# OpenVPN +#ip6tables -A forwarding_rule -o tun+ -j ACCEPT +#ip6tables -A forwarding_rule -i tun+ -j ACCEPT |