Error 721: VPN problem: Please help

[posharma]

Hi Everyone,
I'm using Windows XP Home edition ver. 2002 service pack 2. When i try to connect to a remote VPN server using microsoft's VPN client, i get verifying username and password and then after some time it says error 721: remote computer did not respond. I disabled the firewall. Please help. I've tried several places with no definitive answer.
Here's the output from pptpclnt.exe with firewall disabled:
C:\Documents and Settings\Pranav>pptpclnt 69.238.120.61

Initializing WinSock...
Obtaining host information...
Successfully resolved server's host information

======================================
Enter data to send to server (between 1 and 255 chrs.), then hit enter:
-->hi server

Successfully connected to server using TCP port 1723 (PPTP)
Sending data to server

Waiting for a reply to the data which was just sent...
Received a reply. Reply contains the following text:
--->

=================================
Connectivity test to TCP Port 1723 was successful!!!
Closing down socket...
=================================

Creating a socket to test GRE protocol traffic...

Total GRE packets sent = 1
Total GRE packets sent = 2
Total GRE packets sent = 3
Total GRE packets sent = 4
Total GRE packets sent = 5

=====================================
Check server to see if the GRE packets were received successfully
=====================================

Closing down socket

Goodbye!

 

[posharma]

Here's a solution to my problem. Yup, i figured it out.
Yeah, i was trying to break my head with this thing for quite some time and did not realize that cisco's vpn client that i was using for yahoo ran a local server on my box that did its own firewalling. Hence even though i had disabled windows firewall, this cisco one was blcoking my outgoing GRE (IP Protocol 47) packets.
Remember that VPN Error 721 is primarily a firewall problem. So look at that when troubleshooting it.
Thanks to me .