[squid-users] Authenticaton failure with dotnet 2.0 app

Hi,
    Has anyone had problems with Windows app's, using dotnet 2.0,
authenticating against a Squid proxy.?

We have a situation where a C# application, using .NET 1.1, which
relays SMS's via the Internet, has been working successfully for many
moons. Upon re-compling this app and running it with .Net 2.0 we find
that the NTLMSSP authentication fails against our SQUID proxy server.

Ethereal traces shows the usual initial situation where the app
establishes a TCP session with the proxy and then sends a HTTP POST, the
proxy responds with authentication required using NTLM and that TCP
session is closed. The application initiates another session and in the
HTTP POST, now includes the NTLM type 1 message. The proxy responds with
the "challenge" however the app does not respond to this and stops with
a 407 error.

I'm more that ready to believe that this isn't a SQUID problem and
indeed have logged a ticket with Microsoft. I was really hoping that
someone on the list has a ready answer/suggestion for me.

I have tested against a proxy made up of:

System: 2.6.15-1.2054_FC5smp #1 SMP Tue Mar 14 16:05:46 EST 2006 i686
i686 i386 GNU/Linux

Squid Cache: Version 2.5.STABLE12
configure options: --prefix=/etc/squid --bindir=/usr/bin
--sbindir=/usr/sbin --libexecdir=/usr/sbin --datadir=/usr/lib/squid
--sysconfdir=/etc/squid --localstatedir=/var/squid --libdir=/etc/squid
--m andir=/usr/share/man --enable-cache-digests
--enable-default-err-language=English --enable-err-languages=English
--enable-auth=ntlm --enable-ntlm-auth-helpers=SMB
--with-samba-sources=/root/samba-3.0.23b

squid.conf snippet:
<
auth_param ntlm use_ntlm_negotiate on
auth_param ntlm program /usr/bin/ntlm_auth -d 9 -l /root/ntlm.log
--helper-protocol=squid-2.5-ntlmssp
auth_param ntlm children 5
>
SAMBA/WinBind: samba-3.0.23b-1.

The authentication backend is a Windows AD.

Regards Mike D.

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