On 2006-12-20, Asfand Yar Qazi <ayqazi@xxxxxxxxx> wrote: > On 12/20/06, Petr Pisar <xpisar@xxxxxxxxxx> wrote: >> On 2006-12-20, Asfand Yar Qazi <ayqazi@xxxxxxxxx> wrote: >> > I have an ipv6 tunnel on the device 'tunbt6', and another interface on >> > eth0 to the rest of my network. >> > >> > When I enter the following commands: >> > >> > ip6tables -N filter6 >> > ip6tables -A filter6 -m state --state NEW -i ! tunbt6 -j ACCEPT >> > ip6tables -A filter6 -m state --state ESTABLISHED,RELATED -j ACCEPT >> > ip6tables -A filter6 -j REJECT >> > >> > ip6tables -A INPUT -j filter6 >> > ip6tables -A FORWARD -j filter6 >> > >> > >> > It doesn't work! I can't even ping6 the machine over eth0 from my >> > other computer connected to the same ethernet segment! >> > >> >> IP6 uses ICMP6 for link level address resolution (like IP4 uses ARP). >> Therefore you need to accept NEW icmp6 packets. At least some types. >> Read draft-ietf-v6ops-icmpv6-filtering-bcp-01.txt (can be found on IETF >> FTP server) for more detailes. >> > > I'll just let in all icmp6 packets. Now to figure out how to do that... > ip6tables -I filter6 -p icmpv6 -j ACCEPT -- Petr
