Hello, I have a problem running both of these modules at one time (ip_conntrack_pptp and ip_nat_pptp). Here is my scenario. We have a firewall that is running both poptop and pptpclient under RHEL3. The firewall can accept incoming pptp sessions without fail. It can also make outgoing calls without fail unless ip_nat_pptp is loaded. When ip_nat_pptp is loaded the firewall fails on all outgoing request. Clients behind the firewall that need to talk to other pptp servers cannot make reliable calls unless ip_nat_pptp is loaded. If loaded they work fine... Originally I was told that this was handled by ip_conntrack_pptp which is loaded but seems to have no effect for calls originating behind the firewall. Here are the modules that I', loading and the order that I'm loading them in (in case that makes a difference) /sbin/modprobe ip_conntrack_proto_gre /sbin/modprobe ip_conntrack_pptp /sbin/modprobe ip_nat_proto_gre /sbin/modprobe ip_nat_pptp /sbin/modprobe ip_conntrack_irc /sbin/modprobe ip_nat_irc /sbin/modprobe ip_conntrack_ftp /sbin/modprobe ip_nat_ftp /sbin/modprobe ip_conntrack_mms /sbin/modprobe ip_nat_mms /sbin/modprobe ipt_LOG /sbin/modprobe ip_gre /sbin/modprobe ipt_MASQUERADE /sbin/modprobe ip_conntrack /sbin/modprobe iptable_nat Please note that this is a custom kernel with the conntrack_pptp module loaded (no other changes) as well as a recompiled iptables to match (because of the change table space structures). Iptables is v1.2.11 This is something that we have been fighting with for several weeks now. Any help would be greatly appreciated. Gary Smith