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Network Monitor Wizard now at CodePlex

I already talked about Network Monitor Wizard (AKA NetWiz ) here some months ago and this is an ongoing project that I have with some friends at Microsoft. Since our original code (written in C#) had some third party components we couldn’t really publish Read More...
Posted Tuesday, August 18, 2009 2:53 PM by yuridio | 0 Comments

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

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

Netmon Experts Day

Michael Hawker (Network Monitor PM) just release a video about the first Network Monitor Experts Day. Watch it at: http://channel9.msdn.com/posts/MichaelHawker/Network-Monitor-Experts-Day-Part-1-The-Experts-Story/ Also, talking about Netmon, check it Read More...
Posted Tuesday, June 09, 2009 8:28 PM by yuridio | 2 Comments

Netmon 3.3 is now available for public Download

Great news folks! Netmon Team just released Netmon 3.3 for public download. This release brings new enhancements from previous version, such as: · Ability to capture on WWAN and Tunnel interfaces on Win7 · Right-click add to alias. · Right click go to Read More...
Posted Wednesday, April 22, 2009 6:11 PM by yuridio | 1 Comments

Exchange Active Sync Direct Push fails when published through ISA Server 2006

This post is about a case where Windows Mobile devices were having problems when enabling Active Sync Direct Push feature. On the device we were receiving the error 0x80072eff . This error means: err 0x80072eff # anonymous HRESULT: Severity: FAILURE (1), Read More...
Posted Monday, April 13, 2009 11:47 PM by yuridio | 1 Comments

Unable to Access Network Resources from WINDOWS VISTA through VPN using ISA Server 2006 as VPN Server

Last week I said that 3 out of 5 cases where user says it is an ISA issue it ends up not being. Today I worked in another case that goes to that statistic. What makes me sad about this is the mindset that many Windows Admins, Network Administrators and Read More...
Posted Wednesday, April 01, 2009 2:01 AM by yuridio | 1 Comments

Error 64 when using Outlook Anywhere Published by ISA Server 2006

Last Tuesday night I was helping out a friend from my team that was handling a case where customer was unable to access Outlook Anywhere from outside network. As usual, everything works inside, so who’s to blame? Of course ISA Server, it is the only thing Read More...
Posted Thursday, January 29, 2009 5:21 AM by yuridio | 1 Comments

Demystifying Networks Concept on ISA/TMG

The reason why I’m saying “demystifying” is because many people are still having wrong concepts and therefore making wrong assumptions about how networks are configured on ISA Server/TMG. Although this is well documented at TechNet (since it is a core Read More...
Posted Tuesday, January 13, 2009 9:17 PM by yuridio | 0 Comments

What can happen when you think that only Windows system needs to be patched

This post could easily be called “Slow Internet through ISA Server”, but I decided to change the title and the focus. I’m doing that for a simple reason: people still thinking that only Windows system needs to be patched. What an untrue statement this Read More...
Posted Tuesday, December 16, 2008 2:42 AM by yuridio | 1 Comments

Using Netmon 3.2 to Identify an Unexpected Traffic

1. Understanding the Problem I already worked in many cases where customer wants to know why ISA is alerting that it might be under attack by logging events such as: Figure 1 – Number of TCP Connections. …and also this one: Figure 2 – Denied Connections Read More...
Posted Sunday, October 19, 2008 8:14 PM by yuridio | 0 Comments

ISA Server Losing Secure Channel with the DC - The 5783 Nightmare

The first time that I blogged about this was in October 2006 at ISA Server Team Blog , we were getting so hammered about that issue that it motivates us to create an official article about that. Last year we published an article at Microsoft TechNet Library Read More...
Posted Thursday, June 05, 2008 3:29 PM by yuridio | 0 Comments
 
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