Hello I have kernel 2.4.25 and iptables 1.2.11. When I typed: iptables -p tcp --syn --dport 80 -m connlimit --connlimit-above 80 -j REJECT The system pesponded: iptables v1.2.11: no command specified Try `iptables -h' or 'iptables --help' for more information. Anyone can tell me what did I wrong? -- Robert