IPv6 firewall support.

[firewall] / local.m4

diff --git a/local.m4 b/local.m4
index 27caa44f6025952688a77a9e9fbc9cbdd9e0b0ee..5e274499bfa9a4424710f48cd80b86655c4ea770 100644 (file)
--- a/local.m4
+++ b/local.m4
@@ -63,6 +63,15 @@ run iptables -A FORWARD -j ACCEPT \
        -p icmp ! -f --icmp-type echo-reply \
        -m mark --mark $from_untrusted/$MASK_FROM \
        -m state --state ESTABLISHED
+run ip6tables -A FORWARD -j ACCEPT \
+       -p ipv6-icmp --icmpv6-type echo-request \
+       -m ipv6header --soft ! --header frag \
+       -m mark --mark $to_untrusted/$MASK_TO
+run ip6tables -A FORWARD -j ACCEPT \
+       -p ipv6-icmp --icmpv6-type echo-reply \
+       -m ipv6header --soft ! --header frag \
+       -m mark --mark $from_untrusted/$MASK_FROM \
+       -m state --state ESTABLISHED
 
 ## Allow SSH from safe/noloop to untrusted networks.
 run iptables -A FORWARD -j ACCEPT \
@@ -72,6 +81,15 @@ run iptables -A FORWARD -j ACCEPT \
        -p tcp ! -f --source-port $port_ssh \
        -m mark --mark $from_untrusted/$MASK_FROM \
        -m state --state ESTABLISHED
+run ip6tables -A FORWARD -j ACCEPT \
+       -p tcp --destination-port $port_ssh \
+       -m ipv6header --soft ! --header frag \
+       -m mark --mark $to_untrusted/$MASK_TO
+run ip6tables -A FORWARD -j ACCEPT \
+       -p tcp --source-port $port_ssh \
+       -m ipv6header --soft ! --header frag \
+       -m mark --mark $from_untrusted/$MASK_FROM \
+       -m state --state ESTABLISHED
 
 m4_divert(80)m4_dnl
 ###--------------------------------------------------------------------------
@@ -93,19 +111,19 @@ run iptables -A inbound -j ACCEPT \
        -p udp --source-port $port_bootpc --destination-port $port_bootps
 
 ## Allow incoming ping.  This is the only ICMP left.
-run iptables -A inbound -j ACCEPT -p icmp
+run ip46tables -A inbound -j ACCEPT -p icmp
 
 m4_divert(88)m4_dnl
 ## Allow unusual things.
 openports inbound
 
 ## Inspect inbound packets from untrusted sources.
-run iptables -A inbound -j forbidden
-run iptables -A INPUT -m mark --mark $from_untrusted/$MASK_FROM -g inbound
+run ip46tables -A inbound -j forbidden
+run ip46tables -A INPUT -m mark --mark $from_untrusted/$MASK_FROM -g inbound
 
 ## Otherwise process as indicated by the mark.
 for i in INPUT FORWARD; do
-  run iptables -A $i -m mark ! --mark 0/$MASK_MASK -j ACCEPT
+  run ip46tables -A $i -m mark ! --mark 0/$MASK_MASK -j ACCEPT
 done
 
 m4_divert(-1)