Help with Samba using iptables

[Nandan Bhat <nlbhat@gmail.com>]

Hi,

I am hoping to get some help with some iptables. I am a newbie to all 
this; please bear with my language and detail.

I have two networks 192.168.1.0 and 192.168.0.0

192.168.1.0 is my LAN. It has a Fedora Core 5 machine with 192.168.1.6 
on eth0, running  samba and iptables among other services. 192.168.1.6 
is the WINS server on the network. I don't know if it is right but I 
have made it the local master and domain master. There is no domain in 
use on the network. I have seen an improvement in the LAN browsing after 
using this setup.

I have one CAT-5 cable coming from 192.168.0.0 network and my Fedora 
machine is connected to it on eth1. It has the fixed IP 192.168.0.176. 
In my iptables setup, I have allowed TCP ports 139, 445 and UDP ports 
137, 138 (regardless of source/destination/interface/IP) to be accepted 
in INPUT chain.

The status is that I am able to see my workgroup in 192.168.1.0 from 
within 192.168.0.0 network with all machines listed, but I can access 
only my Fedora server that is part of both networks. In my network, I 
can see all workgroups in 192.168.0.0 network but not see any host on 
it. On the Fedora machine, I am able to use smbclient to browse hosts on 
192.168.0.0 network. My conclusion: nothing is routing smb packets from 
hosts (other than my server) in 192.168.0.0 to 192.168.1.0 and vice versa.


My question: Is there a way I can get hosts on 192.168.0.0 and 
192.168.1.0 by using iptables alone?

Regards,

Nandan Bhat