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Hi guys, i have a problem with a configuration what
i'm trying to do.
I have two computers with linux, A and B,
connected in the same network with this configuration:
PC1 A: 192.168.192.1
PC2 B: 192.168.192.30
The PC1 A is a firewall doing nat... this one is
connected to the internet via an adsl modem and of course it have its own
public ip , and the router B is a smtp server but connected behind the router A,
what i'm trying to do is redirect the smtp incoming traffic of the router A to
the router B using iproute2 and nerfilter tools
This is the configuration on the router
A:
iptables -t mangle -A POSTROUTING
-p tcp --dport 25 -j MARK --set-mark 1 ( this marks the smtp
packets with 1 )
i create a table called "smtp" in the
rt_tables file.
ip rule add fwmark 1 table smtp (
this is the rule for my table smtp )
and finally i declare a via in my smtp table, so
the smtp traffic would have to go by this way.
ip route add default via 192.168.192.30
table smtp
Ok... for example if i make a telnet to
PC1 on the 25 port.. this should redirect me to PC2 where is my real
smtp server, but is not working... any idea of why ? the PC2 have not
a firewall..
Thank you!!
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