Thank you all for your help! The reason why I asked for your help was because I had the following problem: Router: 1.4 GHZ AMD 256 RAM Realtek 8139 NIC Slackware 2.6 kernel No iptables rules just iproute2 routing. I have 2 sub-networks and the router is configured as a "router on a stick". I tested a simple routing from one sub-network to another (FTP transfer) (the traffic enters and leaves the router using the same NIC) and the maximum transfer rate is 50 Mbit (instead of 100 Mbit as expected). I wonder how am I able to route a Gigabit network ... Someone told me that he solved the problem using FreeBSD as it has a better performance on this field... I am bound to Linux as it has a superb implementation of QoS. You have nothing like this in BSD. I want to ask you: what is the maximum transfer rate that you can obtain on your configurations (with and without heavy firewalling / marking / tc). Thanks again for your input! Mihai _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc