Cannot get VPN to work

[GS3]

I am setting up my first VPN. Server on desktop works fine. Client on laptop
also works just fine. If I connect the laptop to the LAN then the VPN to the
desktop works fine. The problem is when I try to set up the VPN from the
Internet it will not connect.

I suspect the problem must lie within the router and/or firewall. I am
using an Office Connect 3CRWDR 100Y-72 Router and Zonealarm in both
computers. I have been messing with both things but no luck. I have tried
stopping Zonealarm but no go. I have tried opening ports on the router and
even the DMZ but nothing works.

What can I do now?

 

[Robert L. \(MS-MVP\)]

Do a simple test. Can you telnet port 1723? Check these search results,

VPN Troubleshooting FlowchartVPN Troubleshooting Flowchart. This web is
provided "AS IS" with no warranties. Copyright © 2002-2008 ChicagoTech.net,
All rights reserved. ...
www.chicagotech.net/vpn_troubleshooting_flowchart.htm

VPN IssuesTroubleshooting VPN VPN Browsing Issues · VPN Error Code ·
VPN Logon Issues · VPN Name Resolution · VPN as Router · VPN Routing Issues
· VPN TCP/IP Settings ...
www.chicagotech.net/vpnindex.htm





--
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com

 

[GS3]

Wow, what a coincidence. I was just checking in to say that, after much,
fumbling around, I finally determined the problem was not with the host side
but with the client side and it turned out to be Zonealarm. I am not sure of
the exact cause but if I set the Internet zone to medium security, instead of
high, then the VPN connects and works.