-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Graham, Thanks but still same error msg: iptables -A INPUT -p tcp -m state --state ESTABLISHED,RELATED -j ACCEPT iptables: Invalid argument Some more info: /lib/modules/2.6.20.1/kernel/net/netfilter# ls nf_conntrack.ko nf_conntrack_ftp.ko x_tables.ko xt_conntrack.ko xt_limit.ko xt_state.ko xt_tcpudp.ko Strange why I'm getting this error .... it's a standard 2.6 build and the same firewall script/commands I use regularly on earlier kernels. - -- Thank you. Regards, Rudi. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFF9Pc6gOUisCetzRYRAvp2AJkBAHi+IBwduQ/Ty4V4BPK5SKmmpgCfQYJX HBQhcDh043BiwomvF0uDhuw= =ucQr -----END PGP SIGNATURE-----