I'm having some trouble setting up a PPTP VPN server behind a firewall. Internet ----- Firewall ---- LAN (Including PPTP server)
At the moment I'm forwarding port 1723 back to the PPTP server. I can see the logs of the client connecting to the server, but when the server sends it's first LCP ConfReq there is never any reply. I'm guessing there is some sort of routing issue involved, but can't seem to get it set up. The firewall and PPTP server are both running 2.4.18 kernels with iptables and GRE tunnels set up as modules and mppe patches for the kernel and for pppd, both are Debian stable. I know the VPN configs are fine as I can get it working if the VPN runs on the firewall, but I'd really rather not have the VPN running on the firewall if I can get around it. Thanks for any suggestions/help.
