Exchange server authentication

Andrew Bartlett abartlet at
Sun Aug 28 18:24:44 EDT 2005

On Thu, 2005-08-25 at 13:57 -0700, Devon Hubbard wrote:
> Hello.  I¹m a first time poster to the list and I apologize if this
> information is available elsewhere, but I was wondering if anyone has any
> sample code that uses Kerberos to authenticate to an Exchange server?  I¹m
> specifically trying to do this from an OS X client.  

Which program in particular?

> I¹m poking around in
> tcpdump data and I can¹t determine if I¹m just missing something, or if the
> Exchange test server I¹m using isn¹t properly identifying that it can
> provide Kerberos authentication.

The mechanisms you need to look for are GSS-SPNEGO for SASL and
'Negotiate' for HTTP.  This is what Microsoft uses to choose between
NTLMSSP and Kerberos.

Andrew Bartlett

Andrew Bartlett                      
Samba Developer, SuSE Labs, Novell Inc.
Authentication Developer, Samba Team 
Student Network Administrator, Hawker College
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