Hello Rob, Yes sure firewall:# lsmod Module Size Used by Not tainted ipt_state 608 2 (autoclean) ipt_REJECT 3424 1 (autoclean) ipt_LOG 3296 1 (autoclean) iptable_filter 1728 1 (autoclean) ip_nat_pptp 2304 0 (unused) ip_nat_ftp 3488 0 (unused) ip_conntrack_pptp 2720 1 [ip_nat_pptp] ip_conntrack_proto_gre 3168 0 [ip_nat_pptp ip_conntrack_pptp] ip_conntrack_ftp 4192 1 [ip_nat_ftp] iptable_nat 20756 2 (autoclean) [ip_nat_pptp ip_nat_ftp] ip_conntrack 24852 5 (autoclean) [ipt_state ip_nat_pptp ip_nat_ftp ip_conntrack_pptp ip_conntrack_proto_gre ip_conntrack_ftp iptable_nat] ip_tables 13504 7 [ipt_state ipt_REJECT ipt_LOG iptable_filter iptable_nat] firewall:# Tuesday, December 2, 2003, 11:18:29 PM, you wrote: >> iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source >> XXX.XXX.XXX.XXX >> with an error "iptables: Invalid argument" I suspect, that an argument >> is XXX.XXX.XXX.XXX RS> Did you compile and load the module iptable_nat ? RS> Gr, RS> Rob -- Best regards, Oleg mailto:savostyanov@xxxxxxxxxxxxxxxxxxxxx