Hi A simple program which transfer packets would do it. One that comes to my mind is http://aluigi.altervista.org/mytoolz/sendrecvtest.zip Simple TCP test program. Put one on each side of the firewall and see results. You may want to send "noise" to the firewall. Send data with netwox http://www.laurentconstantin.com/en/netw/netwox/ Have a nice day Maxime Ducharme Programmeur / Spécialiste en sécurité réseau ----- Original Message ----- From: "ro0ot" <ro0ot@xxxxxxxxxxxx> To: <netfilter@xxxxxxxxxxxxxxxxxxx> Sent: Saturday, January 15, 2005 2:37 PM Subject: test netfilter max throughput > Hi, > > How can I test my netfilter's max throughput? > > Regards, > ro0ot >