vpn trouble with win2k server

[nightowl2003]

Hi,

I am having trouble setting my system up to allow vpn connections. my system consists of the following:

Solwise SAR110 ADSL/Router
Windows 2000 server sp4
4 clients on xp

The router is open to accept port 1723 tcp then using nat to forward it to the private ip of the server.

When remote users try to connect to the server via vpn they just get verifying username and password and get disconnected from there isp. the users are connecting from 56k modems. the router is vpn compatable

Thanks

 

[ChicagoTechNet]

quoted form

http://www.ChicagoTech.net

Which ports need to be opened for running VPN

A: PPTP VPN uses TCP Port 1723, IP Protocol 47 (GRE); L2TP: UDP Port 1701; IPSec: Pass protocol 50 and 51. Note: 47 is a protocol number and not TCP port. The protocol name is GRE. It'll make a big difference when configuring your firewall or router.


Robert Lin, MS-MVP, MCSE & CNE
Windows, Network and How to at

http://www.ChicagoTech.net

 

[nightowl2003]

I have already opened the following but i still cant get a connection. the router will just crash or log of remote user

TCP Port 1723, IP Protocol 47

 

[ChicagoTechNet]

what's the error code?

Robert Lin, MS-MVP, MCSE & CNE
Windows, Network and How to at

http://www.ChicagoTech.net