Hello If I have a interface with e.g. 3 alias eth0 eth0:0 eth0:1 eth0:2 will this following rules apply on only eth0 and not eth0:0, eth0:1 and eth0:2 or will it apply on all of them iptables -A INPUT -i eth0 --dport 80 -j ACCEPT iptables -A INPUT -i eth0 -j DROP e.g If I get a packet on eth0:1 will the packet get ACCEPT if it is for port 80 or do I have to make a rule for all the alias where I use the alias ip instead of the -i eth0 option? Jeppe Sorensen