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MaxUserPort - what it is, what it does, when it's important
11 March 08 05:17 PM | tristank | 0 Comments   
What can we say about MaxUserPort that hasn't already been said? Not a lot, it would seem. He's a beautiful dancer, perhaps? Ahh, such gentle humour, and nary a kitten drowned anywhere. But TCP port shenanigans are fairly frequently misunderstood, so Read More...
SetSPN improvements in Windows Server 2008! W00t!
21 December 07 05:21 PM | tristank | 0 Comments   
All this stuff is based on a prerelease (RC1) version of Windows Server 2008 and may change before final release. Cheques may not be honoured. I had a happy moment one night in India when the trainer for our IIS 7.0 TTT course discussed some of the Kerberos-related Read More...
401.3, you say? Not 403?
22 October 07 08:35 PM | tristank | 1 Comments   
You're running an IIS 6.0 website, and you have a virtual directory configured for anonymous authentication only (that is, you've un ticked Integrated Windows Authentication). Using a web browser, you try to access a file in that virtual directory. http://example.com/vdir/something.txt Read More...
KDC_ERR_BADOPTION when attempting constrained delegation
18 June 07 06:50 PM | tristank | 1 Comments   
Hit this earlier while working with someone else on a Kerberos delegation problem. All the SPNs looked right and were registered against the right accounts; all the App Pools were Network Service; from what I'd been told, everything should have been working... Read More...
Kerbi Wiki
12 April 07 05:35 PM | tristank | 1 Comments   
Back from another holiday (I call it the Arnold Rimmer technique) I've been trying to collect, rework and refurbish my thoughts on web-based Kerberos stuff in a personal Wiki. You're welcome to peruse it with the usual disclaimers that I'm frequently Read More...
DebugDiag 1.1 Released!
17 January 07 05:36 PM | tristank | 0 Comments   
IIS Troubleshooters rejoice! If you've ever had an application on an IIS server do one of the following, this tool is for you: - hang (or respond slowly) - crash (W3WP.exe terminated unexpectedly) - chew memory in the lead-up to a crash or need a restart Read More...
3 Simple Rules to Kerberos Authentication/Delegation SPNs
08 May 06 07:32 PM | tristank | 9 Comments   
The one where I try to boil Kerb down to three simple rules, and then decide that's probably impossible without sub-rules and perhaps a nine article series, and then get bored and go home. Read More...
Custom Password Filters
19 July 05 12:30 AM | tristank | 1 Comments   
Back from holiday now, and almost over the jetlag. Almost. A question came up today about Password Filter DLLs , and the documentation always seems to be hard to find, so I've popped up a quick summary of everything I know here. Back In The Day of NT4, Read More...
ISA 2004 does 502s rather than 407s if you're already authenticated
01 November 04 11:07 AM | tristank | 6 Comments   
There were a couple of newsgroup questions on ISA 2004 authentication that prompted me to go digging through the SDK. Edit: A little more background so this makes more sense: When an HTTP request is submitted by a client (also called a "user agent", because Read More...
Communities Blog Portal Now Open! With Keyword RSS Feeds!
10 July 04 12:16 PM | tristank | 2 Comments   
http://www.microsoft.com/communities/blogs/PortalHome.mspx Coolest feature: the ability to fashion a keyword/category query into an RSS feed across all Microsoft blogs. If you're only interested in certain things (and personalities be damned!), you can Read More...

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