VPN Server with one NIC

[jenkinstechnology]

Hello,
The only examples I can find on Win2000 VPN setup have the VPN server with 2 NICs and different IP segments, so it acts as a router between the two. In my situation, I only have one static IP from my DSL connection, which feeds through a DSL Router. All the servers are on that IP segment fed by the router (192.168.1.X). The IP address that is registered to the outside world is forwarded by my router to my server behind the router with a private address (192.168.1.20). I want to have that server serve up VPN connections and allow those connections to hit the other servers on the network, all of which are on the 192.168.1.X subnet. The server @ 192.168.1.20 has one NIC only. I can see the VPN client hit the VPN server, just doesn't connect (fails with Error 721 - server didn't respond). The DSL router has forwarding turned on to the VPN server, and ports from 1-8000 opened....


Thanks for any help,
Paul

 

[peterve]

maybe your ISP is blocking PPTP.. you can try L2TP ---------------------------------------------------------------------
I have not failed, I've just found 10,000 ways that don't work
---------------------------------------------------------------------
Peter Van Eeckhoutte
peter.ve@pandora.be
*:->* Did this post help? Click below to let me know !

 

[NerdBoy]

I have run into a simular situation where the vpn server was not accessable while it was on the private side of the router. Even with ports forwarded and vpn pass through turned on it would not work. I found that with some of the router that have built in firewalls, the VPN server must be set up on the WAN side of the firewall or the DMZ in order for sucessfull VPN connections to occour.

 

[tiash]

First double check your settings, try delete the routing and reote access and reconfigure making sure to set it up for VPN. vheck that the port is open over the LAN by using telnet from the command line.[telnet {server IP} 1723] for pptp. If the port opens then the server is listening on that port. Try this same step by telneting to the port using the WAN IP [the one that maps to the server]. If this works then your permission and security for the user account is the issue. if this fail the issue is with your router configuration. If this is the issue tell me the model of your router.

 

[jenkinstechnology]

Thanks to all who replied. It was both a router AND an ISP issue I had to make sure the router passed PPTP traffic (default was off). So that made it work on the LAN and WAN side per Tiash's post. However my dial-up client through GTE.NET couldn't connect. I switched to Everyone's Internet (ev1.net) and it worked! So, a single NIC Server can indeed be the VPN endpoint!! Works like a champ, thanks again for all that responded/emailed me!

Paul

 

[peterve]

glad it works ! --------------------------------------------------------------------
How can I believe in God when just last week I got my tongue caught in the roller of an electric typewriter?
---------------------------------------------------------------------
I have not failed, I've just found 10,000 ways that don't work
---------------------------------