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The Firewall Madness

This week I worked in an issue where ISA Server 2006 was stopping answering request and NLB on ISA Server was constantly appearing with the status for “Unavailable”. The odd thing about this scenario was that every time that the firewall admin changed Read More...
Posted Thursday, October 22, 2009 4:09 PM by yuridio | 0 Comments

Unwanted prompt for authentication while browsing a web site that uses SQL Reporting Services 2008 published by ISA Server 206

Introduction This post is about an interesting case where the final goal of the system administrator was to allow “all” public users to access some reports that were located/generated by SQL Reporting Services 2008. The regular web site was published Read More...
Posted Wednesday, October 07, 2009 11:36 PM by yuridio | 0 Comments

IIS on ISA, just one more reason to avoid this type of setup

There are many reasons for me to not enjoy the idea of having IIS on the same box as ISA Server. First and foremost you need to remember that ISA is a Firewall so you shouldn’t use as web server anyway (put your web server behind ISA). Another reason Read More...
Posted Wednesday, October 07, 2009 2:39 AM by yuridio | 0 Comments
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Error 500 while trying to access some parts of the CRM 4 Web Site Published through ISA Server 2006

This short post is about an issue that I worked a couple of weeks ago about publishing CRM through ISA Server. The admin had followed the post that I wrote on how to publish CRM through ISA Server 2006 and most of the things within CRM web sites were Read More...
Posted Thursday, October 01, 2009 8:01 PM by yuridio | 0 Comments
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Unable to Install ISA BPA

Today while troubleshooting in ISA Server issue I had to install ISABPA in order to get an ISA Data Packager in repro mode. When the admin was trying to install ISABPA we got the following error: The user that was trying to execute this setup was the Read More...
Posted Thursday, October 01, 2009 1:49 AM by yuridio | 0 Comments

Troubleshooting Tips for VPN Client Access on ISA Server 2006

1. Introduction I wrote some time back about an issue on ISA Server related to VPN and on that post I emphasized the following: “…ISA Server VPN component uses Windows RRAS component and that when the ISA is isolated from the main problem, the troubleshooting Read More...
Posted Friday, September 25, 2009 6:46 PM by yuridio | 0 Comments
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Error 0xc0040357 while trying to Backup ISA Server Configuration

1. Introduction There is not more frightening then knowing that you can’t backup your server and when I say knowing is because many times administrators don’t backup because they forgot or because they think someone else is doing. But when you know that Read More...
Posted Friday, September 18, 2009 2:42 AM by yuridio | 0 Comments

Wspsrv.exe causing random high CPU utilization – how to catch it?

I was reading the Windows IT Pro Magazine of this month (September 2009) and there I found a nice article written by an Escalation Engineer here from Microsoft Texas ( Michael Morales ) where he describes how to use ProcDump to catch high CPU utilization. Read More...
Posted Tuesday, September 01, 2009 4:07 PM by yuridio | 0 Comments

ISA Server Firewall Service crashed…but why?

1. Introduction When question that I always receive when working with Firewall Service crashing is: why is it crashing? When the answer is: due a third party application…then the next question is: how is that? I thought each process was running independently Read More...
Posted Thursday, August 20, 2009 11:35 PM by yuridio | 0 Comments

Slow performance while browsing Internet using IE8 through ISA Server 2006

Sounds familiar? Interesting though is that in this case it was not an ISA issue (really??? J ) and was actually fixed using the solution below from IE Team: http://blogs.msdn.com/askie/archive/2009/07/17/slow-performance-in-internet-explorer-8-after-installing-the-skype-v4-1-application.aspx Read More...
Posted Friday, August 07, 2009 3:46 PM by yuridio | 0 Comments

Unable to Access some MOSS links when published through ISA Server 2006

Although ISA Server 2006 has a great Sharepoint Wizard to configure Sharepoint/MOSS Publishing rule sometimes what was supposed to be simple can became a nightmare. Most of the times ISA gets beat first since it is the device that faces Internet and users Read More...
Posted Friday, August 07, 2009 3:40 PM by yuridio | 0 Comments
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Error HTTP 400 - Bad Request when accessing a web site through ISA Server

Why is it a bad request? If you haven’t seen this before, I see quiet often in some scenarios involving ISA Server and guess what: if I remove ISA Server from the picture it works just fine . Well, we all know that when you are wide open to Internet there Read More...
Posted Thursday, July 30, 2009 3:06 AM by yuridio | 0 Comments

Error 64 - The Specified Network Name is no longer available while Using a Custom Application through ISA Server 2006

1. Introduction Error 64 can happen due many situations and I documented one of those situations last year and as you could see sometimes it is not easy to find out why this error happens. The issue that I’m about to describe here was identified while Read More...
Posted Sunday, July 19, 2009 5:55 PM by yuridio | 0 Comments

ISA Server Stop Answering Requests and Firewall Service Hangs

The problem that this post is going to discuss was related to a random issue where certain times of the day the ISA Server was stopping answering requests and when the firewall administrator tried to restart the firewall service the service didn’t start. Read More...
Posted Saturday, July 18, 2009 2:36 AM by yuridio | 1 Comments

Identifying the Source of the Traffic

Couple of days ago I was assisting a friend to troubleshoot the infamous 5783 that was causing the authentication prompt issue that we all know about. In this case the problem was happening throughout the night, which was even odder because during the Read More...
Posted Friday, July 10, 2009 1:02 AM by yuridio | 0 Comments
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