Dear linux friends,

I have got the following problem. I got my pc's (working with suse 9.1) connected to a router and the router (Hawkings) has an build in firewall. I tried to make an connecting to the web with GiFT and later KMLDonkey but it seems they are being blocked.
I have got the following questions:
1) how do i make a p2p connection through the firewall
2) When i make the connection with one pc is there than a vulnerability to the other pc's that are also hang up to the router


Thanx

greeting
Marcel

I can't talk about packets being forwarded through a router as I have a direct connection to the web. Also, I use Gnutella, not FT or MLDonkey so the specifics will be different for those protocols, you'll need to use Google. I can tell you that these Firewall rules work for me

#!/bin/bash
iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -j ACCEPT
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -p tcp --dport 17921 -j ACCEPT
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP

The main one is "iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT" - this allows anything through that is related to any packet that was sent from this machine. That one rule does most of the work, however, no-one would be able to download from me without the rule "iptables -A INPUT -p tcp --dport 25611 -j ACCEPT" this opens a port that I can set Gtk-Gnutella to listen to. That way people can send requests for the files I share.

A quick look at Google found this which may be more relevent to MLDonkey through a router