VPN not working when client behind another firewall

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From: Mark Richards (mark.richards_at_expw.co.uk)
Date: 08/04/04 

Date: Wed, 4 Aug 2004 07:37:49 -0700

Hi,

VPN is not working for our client PCs currently trying to
connect from behind another firewall. The administrators
of the "other" firewall have opened up ports 1721, 1723
and 500, 1701, but our PCs get the following error after
the dialog box says "Checking password":

"The remote computer did not respond. For further
assistance, click More Info or search Help and Support
Center for this error number. (Error 721) For customized
troubleshooting information for this connection, click
Help.
Pausing before reconnecting (3 seconds)..."

We've tried opening ALL ports on our firewall but to no
avail. I am also unable to telnet to any of the ports,
although I may be attempting to do this incorrectly.

Any thoughts / help would be much appreciated.

Regards

Mark

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