I ended up loading the module with: modprobe ip_conntrack But I'm wondering why nfnetlink and ip_conntrack were not loaded at boot? Leigh > [root@localhost ~]# insmod /lib/modules/2.6.18-8.1.15.el5/kernel/net/ipv4/netfilter/ip_conntrack.ko > insmod: error inserting '/lib/modules/2.6.18-8.1.15.el5/kernel/net/ipv4/netfilter/ip_conntrack.ko': -1 Unknown symbol in module > [root@localhost ~]# dmesg | grep ip_conn > ip_conntrack version 2.4 (8192 buckets, 65536 max) - 304 bytes per conntrack > ip_conntrack: Unknown symbol __nfa_fill > ip_conntrack: Unknown symbol nfattr_parse _________________________________________________________________ Get free emoticon packs and customisation from Windows Live. http://www.pimpmylive.co.uk- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html