RE: Authentication problems using VPN on MS ISA

From: Jim Harrison (SPG) (jmharr@microsoft.com)
Date: 09/17/02 

Date: Tue, 17 Sep 2002 11:57:58 -0700
From: "Jim Harrison (SPG)" <jmharr@microsoft.com>
To: "Fabian Aubrey" <faubrey@gicnet.ca>, <focus-ms@securityfocus.com>

Are you trying to VPN *_to_* or *_through_* the ISA server?
In other words, is the RRAS server *_on_* or *_behind_* ISA?

ISA can't pass IPSec or PPTP traffic, but it does support locally-based
Win2K RRAS VPN.
Can ISA validate the credentials to either a domain or RADIUS service?

Jim

-----Original Message-----
From: Fabian Aubrey [mailto:faubrey@gicnet.ca]
Sent: Wednesday, September 11, 2002 8:52 AM
To: focus-ms@securityfocus.com
Subject: Authentication problems using VPN on MS ISA

Authentication problems using VPN on MS ISA:

We are having difficulty establishing a VPN connection thru MS ISA. We
receive error 691 (authentication) from the server at each connection
attempt. The login we are using is correct however, something seems to
be happening at the ISA level that rejects that login. All parameters
have been verified as per Microsoft Q docs but to no avail. Can anyone
shed any light as to what ISA might be doing to the VPN connection as it
seems that we are contacting the server but just sending garbage as
auth.

Thank You
Fabian

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