Browse by Tags

Tagged Content List
  • Blog Post: Friday Mail Sack: Newfie from the Grave Edition

    Heya, Ned here again. Since this another of those catch up mail sacks, there’s plenty of interesting stuff to discuss. Today we talk NSPI, DFSR, USMT, NT 4.0 (!!!), Win2008/R2 AD upgrades, Black Hat 2010, and Irish people who live on icebergs. Faith and Begorrah! NSPI max sessions per...
  • Blog Post: DelegConfig V2 Released

    Hi all, Ned here again. Our compadre Brian Murphy-Booth has released the newest version of the Kerberos Delegation IIS Website that we have discussed previously here and here . You can grab it here: http://blogs.iis.net/brian-murphy-booth/archive/2009/04/22/delegconfig-v2-beta.aspx Brian really...
  • Blog Post: Friday Mail Sack: Guest Reply Edition

    Hi folks, Ned here again. This week we talk: CA migration from 1 to 2 tier ADAM/ADLDS P2V ABC 123 Managing AGPM security filters Multiple IIS App pools and Kerberos AGPM multi-domain comparison ADUC domain password weirdness DFSR deletion conflict handling Stale account deletion...
  • Blog Post: Kerberos Authentication problems – Service Principal Name (SPN) issues - Part 1

    Hi Rob here again. I hope that you found the first blog on troubleshooting Kerberos Authentication problems caused by name resolution informative and learned something about how to review network captures as well as how the SMB protocol works at a high level when reviewing a network trace. This time...
  • Blog Post: Potential for Kerberos Issues When Using a Cisco VPN/ASA with Win2003 or later DC’s

    Hey everyone, Rob Greene here back after a long hiatus from blogging. I had an interesting case come through that I thought many of you IT pros would be interested in. Background The customer had an issue with using Cisco VPN and Cisco ASA concentrators and authenticating the user with Kerberos...
  • Blog Post: Addendum: Making the DelegConfig website work on IIS 7

    Hi All Rob here again. I thought I would take the time today and expand upon the Kerberos Delegation website blog to show how you can use the web site on IIS 7. Actually, Ned beat me up pretty badly for not showing how to set the site up on IIS 7 [ I sure did. Rob’s revenge was to make a blog post...
  • Blog Post: Kerberos errors in network captures

    Hi guys, Joji Oshima here again. When troubleshooting Kerberos authentication issues, a network capture is one of the best pieces of data to collect. When you review the capture, you may see various Kerberos errors but you may not know what they mean or if they are real problems. In this post, I’m going...
  • Blog Post: CRM and Kerberos

    Ned here again. Are you using MS Dynamics CRM? Be sure to check this excellent blog post from our colleagues Jeremy Morlock and Henning Petersen on how CRM uses Service Principal Names and what you need to get it all working: http://blogs.msdn.com/crm/archive/2009/08/06/configuring-service-principal...
  • Blog Post: Friday Mail Sack: Walking Tall Edition

    Hello folks, Ned here again. After a week in Las Colinas Texas, the blog migration, and Jonathan’s attempted coup, we are still standing. Since I’m sure your whole day has been designed around this post I won’t keep you waiting. RODC WAN down behavior DFSR and the PDCE RPC...
  • Blog Post: Monthly Mail Sack: Yes, I Finally Admit It Edition

    Heya folks, Ned here again. Rather than continue the lie that this series comes out every Friday like it once did, I am taking the corporate approach and rebranding the mail sack. Maybe we’ll have the occasional Collector’s Edition versions. This week month, I answer your questions on: The semi-myth...
  • Blog Post: Hunting down DES in order to securely deploy Kerberos

    Hello folks, Ned here again. By now many businesses have begun deploying Windows Server 2008 R2 and Windows 7. Since Active Directory has become ubiquitous, Kerberos is now commonplace. What you may not know is that we made a significant change to default cryptographic support in Kerberos starting in...
  • Blog Post: Friday Mail Sack: Now with 100% more words

    Hi folks, Ned here again. It’s been nearly a month since the last Mail Sack post so I’ve built up a good head of steam. Today we discuss FRS, FSMO, Authentication, Authorization, USMT, DFSR, VPN, Interactive Logon, LDAP, DFSN, MS Certified Masters, Kerberos, and other stuff. Plus a small...
  • Blog Post: Friday Mail Sack: LeBron is not Jordan Edition

    Hi folks, Ned here again. Today we discuss trusts rules around domain names, attribute uniqueness, the fattest domains we’ve ever seen, USMT data-only migrations, kicking FRS while it’s down, and a few amusing side topics. Scottie, don’t be that way. Go Mavs. Creating trusts...
  • Blog Post: Intermittent Mail Sack: Must Remember to Write 2013 Edition

    Hi all, Jonathan here again with the latest edition of the Intermittent Mail Sack. We've had some great questions over the last few weeks so I've got a lot of material to cover. This sack, we answer questions on: Issues upgrading DFSR hub servers to Windows Server 2012 AD FS Sign-out behavior...
  • Blog Post: Friday Mail Sack – Mogwai Edition

    Hi folks, Ned here again. This week we hunt down some documentation gremlins and give them a well-deserved smack. Also, things will be a bit slow next week as I will be out in Redmond teaching this rotation of Microsoft Certified Masters . Never heard of it? If you’re at the IT career tipping...
  • Blog Post: Kerberos Authentication problems – Service Principal Name (SPN) issues - Part 2

    Rob here. So, we saw in Part 1 what kind of error you could expect when there is no Service Principal Name defined for the Kerberos ticket the application is requesting. The next part I would like to show you is what might be the error message you would get if there were multiple accounts with the same...
  • Blog Post: Fun with the Kerberos Delegation Web Site

    Hi, Rob here. First I want to thank you guys for reading and participating in our blogging efforts. I had one of you e-mail us and ask about the web site I used in the Kerberos Authentication Troubleshooting blogs and if they could get a copy of it. The web site was created by our IIS support counterparts...
  • Blog Post: Friday Mail Sack: Ride ‘Em Cowboy Edition

    Howdy partners, Ned here. This week we talk event logs, auditing, NTLM “fallback”, file server monitoring, and SCOM 2007 management pack dissection. It was a fairly quiet week for questions since everyone is off for vacation at this point, I reckon. That didn't mean it wasn't crazy at work...
  • Blog Post: Friday Mail Sack: Gargamel Edition

    Hi folks, Ned here again. This week we talk about 10 reasons not to use list object access dsheuristics, USMT trivia nuggets, poor man’s DFSDIAG, how to get network captures without installing a network capture tool, and some other random goo. Oh yeah, and friggin’ Smurfs. The downsides...
  • Blog Post: Understanding Kerberos Double Hop

    Hi, Steve here. Kerberos Double Hop is a term used to describe our method of maintaining the client's Kerberos authentication credentials over two or more connections. In this fashion we can retain the user’s credentials and act on behalf of the user in further connections to other servers. ...
  • Blog Post: Friday Mail Sack: Best Post This Year Edition

    Hi folks, Ned here and welcoming you to 2012 with a new Friday Mail Sack. Catching up from our holiday hiatus, today we talk about: Disabling Administrative Shares Making Get-ADDomainController useful’er Kerberos group bloat USMT moving profiles back from other disks The DFSR...
  • Blog Post: SQL Bulk Insert - Access is Denied

    Hey all, Mark from DS again. I have found that numerous cases have been opened where Microsoft customers are upgrading from SQL 2000 to SQL 2005. After the upgrade they were attempting to run a bulk insert statement either in the Enterprise Manager or the Management Studio application and getting an...
  • Blog Post: What's in a Token

    Hi, Randy here. This is my first blog post to help explain authentication and authorization. This post will be helpful in understanding "Access is Denied" messages and how to troubleshoot when these happen. I'd like to start with an explanation of the security token. When you log on to a system, you...
  • Blog Post: Kerberos Authentication problems – Service Principal Name (SPN) issues - Part 3

    Rob here. Now we have seen what it looks like when there is no Service Principal Name defined , and when the Service Principal Name is not unique in the forest. We will now cover what things look like when the Service Principal Name is NOT added to the correct account. We are still using the same...
  • Blog Post: Understanding “Read Only Domain Controller” authentication

    Hello there. Bob Drake here to discuss how Windows Server 2008 “Read Only Domain Controllers” (RODC’s) authenticate users differently from the way Windows Server 2003 and Windows Server 2008 standard domain controllers do. The “ Read Only Domain Controller ” is new to Windows...