Win2k Pro as VPN server

[Tuck007]

I am having problems using Windows 2000 Proffesional as a VPN server for a small network. Here is the present configuration:
VPN Server:
-Windows 2k Pro with Incoming Connection setup for VPN
-Users are setup for connections
-A range of IPs are specified: 192.168.1.125~149
-There are two NICs in the computer, an onboard 3COM ethernet controller (IP: 192.168.1.124 on LAN behind firewall [TCP port 1723 open just in case]) and a PCI Linksys (Static IP on DSL WAN).

When I am on the LAN, I can use WinXP to connect to the VPN just fine. When I attempt to connect outside the network (home, another office, etc) the connection never completes. In most cases, my event log shows a error that states:
The user connected to port VPN3-1 has been disconnected because the authentication process did not complete within the required amount of time.

I have gone over every setting and think it might be a DSL speed issue. Our DSL supports 384k upstream, and I am pushing my boss to upgrade to the next DSL service to allow higher upstream speeds. It should still connect even though it's slow though. Any suggestions, thoughts, or comments would help. Thank you!

.:TUCK:.

 

[peterve]

you need to open/forward port 1723 and also IP protocol GRE (47 -> that's not a port, but a protocol)


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How can I believe in God when just last week I got my tongue caught in the roller of an electric typewriter?
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[Tuck007]

There is no firewall protecting the NIC that is on the WAN. How would I check to make sure IP Protocol GRE is on, and how would I turn that protocol on if it's not?

.:TUCK:.

 

[peterve]

if PPTP is on, then GRE is on

is the NIC directly connected to the WAN (does that NIC have a static IP)
if you want, I can check to see if the port is open, just send me the public IP by email : xxpvec (at ) imperial _dot_ be

thanks

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How can I believe in God when just last week I got my tongue caught in the roller of an electric typewriter?
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[Tuck007]

As I stated in my first post, yes, the NIC has a static IP and is connected to the WAN, the other NIC is connected to the LAN. I will send you the IP.

.:TUCK:.