Hi, I am using vanilla Fedora Core 2, without configuring firewall in anaconda during initial install. Simple rules seems to works with built in modules. e.g. iptables -A INPUT -p ICMP -j DROP However when I tried to use extension modules like <connlimit> and <owner>, iptables always gives me error. For <owner>: iptables -m owner --help ....... OWNER match v1.2.9 options: [!] --uid-owner userid Match local uid [!] --gid-owner groupid Match local gid [!] --pid-owner processid Match local pid [!] --sid-owner sessionid Match local sid [!] --cmd-owner name Match local command name # iptables -A INPUT -m owner --cmd-owner mlnet -j test iptables: Invalid argument # iptables -m owner --cmd-owner iptables v1.2.9: Unknown arg `--cmd-owner' Try `iptables -h' or 'iptables --help' for more information. And similar results with <connlimit> extension. There are corresponding so files in /lib/iptables for that 2 extensions. /lib/iptables/libipt_connlimit.so /lib/iptables/libipt_owner.so So what is wrong with my iptables? It looks like that it didn't load the extensions properly to me. Any help is appreciated. Regards, Dil Lee __________________________________ TSUKAME EIKOU! KAGAYAKE EGAO! Yahoo! JAPAN JPC OFFICIAL INTERNET PORTAL SITE http://pr.mail.yahoo.co.jp/para/