udp masquerading

[Lars Hansen]

Hi.

I have been following this list for some time now, and I think a patch has
been posted,
but I canīt find it anywhere in the archives.

So here is my problem: Netmeeting does
not work, but that does not matter anymore( I have given up ).

Since I have a icq client on the windoze machine, I found
www.buddyphone.com, which
only requires that udp packets on ports 700 and 701 to be forwarded to the
client, so
I used the following setup.

iptables -t nat -A PREROUTING -p udp -i ppp0 --dport 700:701 -j DNAT --to
192.168.0.3
iptables -t nat -A POSTROUTING -p udp -o eth0 --dport 700:701 -d
192.168.0.3 -j MASQUERADE

This I thought would do the trick, but it seems like no packets are recieved
at my client. I am running
a 2.4-test10 kernel.

I truely hope this can be done.

Best regards

Lars Hansen