On a VPS I wanted to add to IP tables:- iptables -A XXXX -p tcp -m string --algo bm --string 'login' -j DROP I got: iptables: Unknown error 18446744073709551615 uname -a = 2.6.35.4 #2 (don't know how this got installed) lsmod | grep ipt = ipt_LOG 5419 2 yum upgrade iptables* = nothing to install. --------------------------------------- On a standalone server (C 5.6) iptables -A XXXX -p tcp -m string --algo bm --string 'login' -j DROP is accepted. uname -a = 2.6.18-274.el5 #1 lsmod | grep ipt = ipt_LOG 39617 1 iptable_filter 36161 1 ip_tables 55457 1 iptable_filter x_tables 50505 6 xt_string,xt_state,ipt_LOG,xt_tcpudp,ip_tables,ip6_tables ------------------------------------------------ Appreciate suggestions on how to get kernel 2.6.35.4 to install the whole IP tables package, especially the STRING and RECENT options (in -m). Thank you. Paul.