My first step would be to increase the logging level to DEBUG for the
SPNEGO-related classes...  you familiar with how to alter log4j's config?

On Mon, Feb 14, 2011 at 2:48 PM, Healey, Thomas <[email protected]
> wrote:

> Bill et al,
> I am sorry. Here is the log.
> 2011-02-14 14:46:21,955 INFO
> [org.jasig.cas.authentication.AuthenticationManagerImpl] -
> <AuthenticationHandler:
> org.jasig.cas.support.spnego.authentication.handler.support.JCIFSSpnegoAuthenticationHandler
> failed to authenticate the user which provided the following credentials:
> Principal is null>
>
> I shouldn't assume that this information is useless or not required. It
> didn't provide me with much:)
> Tom
> Go Hoos!
>
> On Feb 14, 2011, at 2:24 PM, William Markmann wrote:
>
> Hey Tom -- first of all, wahoowa!  Second, if you could post an example log
> snippet from an authentication attempt, it might be a little easier to
> suggest where to look for potential solutions... the "Principal is null"
> message could have several different causes.
>
> - Bill
>
>
> On Mon, Feb 14, 2011 at 2:20 PM, Healey, Thomas <
> [email protected]<mailto:[email protected]>> wrote:
> All,
> As you may know since Windows 7 came out it has been broken regarding
> SPNEGO and CAS environments running on Windows Server 2003. What used to
> happen was when a authenticated domain user went to an CAS protected site
> the user would be seamlessly authenticated  and forwarded onto the app to be
> authorized and, if authorized, sent to the site. Now I get  "Principal is
> null" message in the CAS logs and the user is forwarded to the CAS login
> page. I searched the web for other instances of this problem but those
> people who are having problems with Windows 7 and CAS/SPNEGO were having a
> problem with the version of Java they were using and they were getting the
> following in their logs:
> "GSSException: Channel binding mismatch (Mechanism level: ChannelBinding
> not provided!)" from https://wiki.jasig.org/display/CASUM/SPNEGO
> This is not our problem as we have upgraded the Java version many moons
> ago. It also suggests a MS webpage
> http://support.microsoft.com/?scid=kb%3Ben-us%3B968389&x=10&y=18
> for further guidance but that didn't help when I tried it.
> I have also tried to use Windows Server 2008 but no luck.
> Any thoughts or other areas I can look for answers?
>
>
>
> --
> Bill Markmann
>
> Counterpoint Consulting, Inc.
> (p) 571-338-2455
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> (e) [email protected]<mailto:[email protected]
> >
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Bill Markmann

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