Service Principal Name (SPN) checklist for Kerberos authentication with IIS 7.0/7.5

In continuation to one of my earlier posts which focused on IIS 6.0 this post is more about the confusion that may arise around SPNs for setting up Kerberos authentication in IIS 7.0. IIS 7.0 has a new Kernel-mode authentication feature using which the ticket for the requested service is decrypted using Machine account (Local…

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FTP changes not taking effect in IIS 7.0?

I was working on an FTP issue the other day on IIS 7.0 and I missed something very basic which could have resolved my issue way back had I noticed the nuances of this new model. Normally people tend to go ahead with restarting IIS services for some changes done in the configuration to make…

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Who knows! You may be missing these points for Kerberos authentication failures for Web applications…

I am sharing here some of the general + elusive + ignored + must-have info that you may want to recheck when you are troubleshooting a kerberos cum delegation failure scenario and feel like reaching nowhere near the end of the tunnel (resolution!). These are my personal checklists based on experiences of troubleshooting kerberos related…

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Programmatically managing Virtual Server using C#

Virtual Server 2005 (VS2005) is a well-known tool to manage Virtual Machines (VMs) on a host server. It is a great feature to manage virtualization for hardware/software. Most often one would use the VS2005 Web Admin  interface to manage VMs. But at times (like the way it recently happened for a customer of mine) one…

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Troubleshooting TS Gateway connectivity on Windows 2008, IIS 7.0

Here is something which is not my domain but had to learn the hard way. I recently encountered an issue while enabling Terminal Services Gateway (TSG) on Windows 2008 server. TSG is coupled with IIS 7.0 hosted on Windows 2k8 server and that’s how I came into picture. TSG in simple terms is a feature…

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Some tips if your IIS 6.0 World Wide Web Service (WWW) ever goes down…

Well, every time I try writing some thing different than IIS and for some reason I come back to it Here is a quick troubleshooting tip for a scenario where World Wide Web service on my test IIS 6.0 box went down for no apparent reason. Here is what I started seeing when we tried…

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Case Study: Much ado about Browser’s HTTP connection

Here I will be going in-depth on how a browser maintains HTTP connections with the Server. Something which a Web Developer should be aware of. My main aim is to show some of the tidbits of how a connection is made, how it is reset (from client or server) and some of the connection limitations….

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SSL Troubleshooting for IIS Web Sites contd…

Recently a colleague of mine was working on a customer’s case which was a Critical level incident. High pressure job, huhh! The issue was with SSL not working for one of their web sites. They were seeing “Page cannot be displayed” when trying to access this site over SSL. It worked just fine over HTTP….

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My IIS 6.0 Web Manager – Manage your Web Sites, Application Pools from any where on the Web.

A Web administrator has to have access to the IIS server in order to ensure that any diagnostic/preventive measures can be performed at any point of time. One has to ensure all the web sites are running up and fine during the course of a day. Activities like recycling Application pools, starting/stopping Web sites etc….

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