[squid-users] Problem with authentication to IIS site for users behind squid proxy

Greetings,

An external IIS intranet site is accessed by some of our users. The site
requires authentication - possibly NTLM. The users wanting access to the
site are behind a squid proxy:
Squid Cache: Version 3.0.STABLE7
configure options: '--prefix=/usr/local/squid'

A previous version of squid (V2.6) which we were running popped up a
username/password dialog box prompting for a username and password when
this site was accessed. I'm told that the authentication does work
Squid Cache: Version 2.6.STABLE4-20061004
configure options: '--enable-async-io' '--enable-poll' '--enable-gnuregex'
'--sysconfdir=/global/proxy/etc' 'CC=gcc' 'CFLAGS=-O3'

The user now does not get the authentication dialog - instead the message:

You are not authorized to view this page
You do not have permission to view this directory or page using the
credentials that you supplied because your Web browser is sending a
WWW-Authenticate header field that the Web server is not configured to
accept.
HTTP Error 401.2 - Unauthorized: Access is denied due to server
configuration.
Internet Information Services (IIS)

I have checked the config options in squid.conf and none seem to indicate
the difference between the two installations.
A search has revelaled several posts similar to this but none mentions a
solution.

any assistance much appreciated.
Tony

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Tony Carter
System Administrator

NSW Department of Primary Industries
Suite 5 Level 1 City Square
76 Harbour Dr
Coffs Harbour NSW 2450

PO Box 530
Coffs Harbour NSW 2450

Tel: +61 2 6650 3120
Fax: +61 2 6651 2780

tony.carter_at_dpi.nsw.gov.au
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Received on Fri Aug 15 2008 - 00:42:53 MDT