Hai I am trying to get PPTP conntrack to work, but with no luck. I tried with POM's pptp-conntrack-nat.patch (by Harald). Every time I try to apply the patch it fails. Finally some how I managed to apply the patch on my 2.4.18 kernel. I use iptables-1.2.6a. I have my PPTP server (192.168.1.219) internal to my LAN (eth0) and clients in a different network. I have a linux box where I applied the patch with IP address on one interface eth0 as 192.168.1.76 and another interface eth1 as 192.168.9.10. I have two clients (Win 95) with their IP address as 192.168.9.1 and other's as 192.168.9.2. The default gateway for these clients is set to 192.168.9.10. I added a simple rule in my Linux box iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE >From clients I am able to ping the other networks. ( I am able to ping 192.168.1.219). When I tried to establish a pptp connection from 192.168.9.1 to 192.168.1.219. The connection got established and client logged into the network. The problem aroused here. when I tried from the second client 192.168.9.2 to establish a pptp connection it failed. At any instant only one connection is getting established. So thought the patch is no good so I downloaded a patch from http://www.impsec.org/linux/masquerade/ip_masq_vpn.html which is netfilter-pptp-2.4.17-rev2.patch. when I tried to apply this patch it applied cleanly. Now I tried the above mentioned setup again. Again its the same case. I am not able to connect the second client. At any instant only one client is getting connected. I am caught in this loop. I saw a patch in December's list from Philip. I would like to know the steps involved in getting PPTP conntrack work. Which patch I should apply first, is it the one from netfilter.org pptp-conntrack-nat.patch? When can I apply the patch given by philip? What are the iptable rules I should add? please guide me. I want to connect multiple PPTP clients. Please explain the steps involved in this as I am a new to iptables / conntrack. Thanks in advance. regards, adharsh.
