Hello: My firewall is using Debian and my damn boss asked me to block napster. i have eth0 internal and eth1 external. eth0 = 10.0.0.0/255.255.0.0 eth1 = x.x.x.x I can't find a damn way to do it. ipchains -A input -j DENY -p tcp -s 0/0 -d 0/0 8888 -l << Will not work! :( Thanks! Martin.