Routing/Iptables/Forwarding = i have no idea

[Roger Grosswiler]

Hey togehter,

until the update to Kernel 2.6.22.x i had a well working, forwarding, proxying and
natting infrastructure.

Since this Kernel it is not working no longer, as internal traffice outside squid gets
no longer forwarded.

i have forwarding-rules for a transparent-proxy, that work now again. Internal and
external. This must be because of squid forwarding the requests.

e-mail is no longer working, as the request doesn't get forwarded to the mailserver. it
stops somewhere on the firewall (3 nics, all use SNAT-Rules to mask their IP-Adresses).

Traceroute also stopps on the firewall, nothing goes outside. The forward-bit is set in
ip4_forward.

Did they change something in iptables?


Please help...

Thanks in advance
Roger