Hi: I'm running pre compilied 2.6.18-4 kernel on debian etch. I=B4ve load this modules: ip_nat_irc ip_conntrack_irc iptable_nat ip_tables ip_nat_ftp ip_nat ip_conntrack_ftp ip_conntrack When I try to run this rules: /sbin/iptables -A POSTROUTING -s 192.168.1.0/24 -d XXX.XXX.XXX.XXX -o=20 YYY.YYY.YYY.YYY -p tcp -m tcp --dport 110 -j SNAT --to-source=20 YYY.YYY.YYY.YYY I get this error. iptables: No chain/target/match by that name If I insert chain type: INPUT, OUTPUT or FORWARD they run without problem. What's happen exactly???? There's a problem in kernel? Thanks Zng