2 external interface and 1 internal routing

[captain7616]

hi all,

I am hoping someone can assist me,

I have 2 external interfaces eth1 and eth2 , (and eth0 internal interface)
eth1 = Diginet
eth2 = ADSL

I need to route all browsing traffics (port 80, 312 through eth2 and the rest of the traffic through eth1,

I am using Debian Linux fw1 2.6.8-2-386 (i am loathed toupgrade to the 686 kernal as I have been having trouble with the apt-get upgrade, since the release of Debian ver.4 it seems to have had a problem with the lic6 file), anyway

The way I figure is that I can either do it through iptables or through squid , does anyone have any ideas or white papers on how i can do this ?

Any info will be greatly appreciated


Best regards

Captain

[iwanabeguru]

hi
i see nobody want help you , unfortunately i am not a great iptables guru.

so you need NAT and need FORWARD

in the example:
eth1 ,eth2 external interfaces , eth0 internal

you need a setup script for iptables

#############################
#!/bin/sh
#setting up ip forward in the kernel
echo "1" > /proc/sys/net/ipv4/ip_forward

#setting up forward in iptables
#these four line will set up a basic forwarding without any filtering 
#function
iptables -A FORWARD -i eth1 -o eth0 -j ACCEPT
iptables -A FORWARD -i eth2 -o eth0 -j ACCEPT
iptables -A FORWARD -i eth0 -o eth1 -j ACCEPT
iptables -A FORWARD -i eth0 -o eth2 -j ACEPPT

#setting up NAT
iptables -t NAT -A POSTROUTING -o eth1 -j MASQUERADE
iptables -t NAT -A POSTROUTING -o eth2 -j MASQUERADE
################################

i hope this will work but i am not sure and not guarantee anything