Hello, I am desperately trying to establish mac-filtering on my debian-router. - All default chains are empty, policy set to "ACCEPT". - I execute iptables -A FORWARD -m mac --mac-source $MY_MAC -j ACCEPT and then set the FORWARD-Policy to "DROP". Now I expect the chain to drop all packages exept these coming from $MY_MAC. Am I right? - It does not work. It drops ALL traffic. So why? --Manuel -- SMS bei wichtigen e-mails und Ihre Gedanken sind frei ... Alle Infos zur SMS-Benachrichtigung: http://www.gmx.net/de/go/sms