On Wednesday 12 February 2003 01:37 pm, Juan Carlos Hernandez Gonzalez wrote: > Hi list: > > I have a linux red hat and need configure my iptables for permit only > mac address of clients .. some know how make this .. Thanks Try using the mac match. something like: /sbin/iptables -A FORWARD -m mac --mac-source 00:02:E3:11:C2:46 -j ACCEPT This will only work properly if the clients are on a local ethernet to you. j