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Yuri Diogenes's Blog

Thoughts from a Senior Content Developer @ CSI - Enterprise Mobility Team

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  • Blog Post: The Final Countdown for Forefront TMG

    It has been awhile since I talked about TMG here, but the fact of the matter is that one of the most important TMG services is coming to an end in December 31st 2015. As you know TMG uses Microsoft Reputation Services (MRS) for URL categorization and this service is approaching to an end, as shown at...
  • Blog Post: Common Questions and Answers about ISA Server 2006 and Windows Server 2008

    With Windows Server 2008 bring so many cool features such as SSL VPN, many customers are asking some questions about this integration. Here are some common questions and answers about this: 1) Can I install ISA Server 2006 in a Windows Server 2008? No. TMG will be the first Microsoft Firewall...
  • Blog Post: Forefront Contest Round One – TMG Questions

    Hi folks, we will start the contest today with five Forefront TMG questions. As I mentioned in the previous post , you will need to send me the answers via Twitter using Direct Message feature. In additional to that it is also important to clarify the following points: I must receive your answers...
  • Blog Post: TMG and UAG supportability boundaries

    I remember in the past (IAG and ISA) many people asking what it was and what it was not supported doing on ISA that comes with IAG. As TMG and UAG approaches to release date we do have now an official supportability statement about using TMG that comes with UAG installation. So, before exercise your...
  • Blog Post: Unable to Add an Additional IP on Receive Connector on Exchange Edge when using E-Mail Protection feature on Forefront TMG 2010

    1. Introduction Consider a scenario where Firewall Administrator configure E-Mail Protection feature on Forefront TMG 2010 and enable EdgeSync traffic as shown below: The environment was working fine but later the Firewall administrator wants to add an additional IP on the Receive Connector (in the Forefront...
  • Blog Post: High Processor Utilization by wspsrv.exe process on TMG 2010

    1. Introduction   Troubleshooting high CPU utilization can be challenging, even when you know the process that is causing such behavior, which in this case is the wspsrv.exe.   In order to better understand what’s going on in scenarios like this is recommended to get perfmon snapshot, including...
  • Blog Post: Unable to block access for a web site using URL Filtering Override option on TMG 2010

    1. Introduction The new URL Filtering option on Forefront TMG 2010 allows you to manually add web sites to a specific category; such feature is called URL Category Override . This can be a good approach when you want to force a specific site to be categorized in such way that it fits into a category...
  • Blog Post: Just a reminder….

    Inscrições: https://msevents.microsoft.com/CUI/EventDetail.aspx?EventID=1032453033&Culture=pt-BR
  • Blog Post: TMG – The First 64-bit Microsoft Firewall

    Yesterday I was talking with Richard Hicks and he was telling me how excited he was with the new set of features that TMG has. This is indeed true, many people got really excited with the package of new features that TMG Beta 2 brought, but there is something that you might not realize it yet. TMG is...
  • Blog Post: Using DebugDiag 1.2 to Automate Dump Analysis – TMG High CPU Utilization Scenario

    Introduction The goal of this post is to show how DebugDiag 1.2 can assist you identifying a potential source of bottleneck on a scenario where TMG user mode process (wspsrv.exe) is consuming high amount of CPU. Data Gathering First part is to make sure you collect the user mode dump while the issue...
  • Blog Post: TMG – Making Firewall Management an Easier Task

    1. Introduction I was Proxy 2 administrator back in 1997 in a technology school, in 2000 I took my Proxy 2.0 exam and when ISA 2000 was released I was really like: WOW, that’s a huge change. It was indeed a great moving from a simple Proxy to a more robust Proxy with Firewall capabilities. But when...
  • Blog Post: The Curious Case of TMG Stopping Responding in Random days but always during the Morning

    1. Introduction Talking about curious case to troubleshoot, this was a very good one. First because this was a new deployment, a well planned hardware for the deployment and the amount of traffic hitting TMG was not that huge. Everything seems to be okay, other than the fact that at least twice...
  • Blog Post: Understanding, Configuring and Troubleshooting E-Mail Protection Feature on TMG 2010

    E-Mail Protection feature in TMG was a feature that I used to work a lot when I was in CSS. This year I delivered a session internally about Troubleshooting E-Mail Protection in TMG and today I’m sharing the slide deck (the public version) with you. Feel free to download it: Note: most of the troubleshooting...
  • Blog Post: TMG on EBS, what to expect?

    Do you want to know how TMG plays in the EBS solution? If you do, than next week is your chance to get a full clarification from Amy Babinchak and Tom Shinder in a live presentation. For more information check out Tom’s blog: http://blogs.isaserver.org/shinder/2008/12/09/amy-babinchak-and-tom-shinder...
  • Blog Post: Site to site connectivity with Windows Azure (GA)

    Almost a month ago I wrote this post about an attempt to establish a site to site connection between TMG and Windows Azure and the conclusion was: you need a valid IP on your edge device in order to do that. Done, got my valid IP and now I’m ready to rock! It should be straight forward now that...
  • Blog Post: More on Troubleshooting SSTP

    A buddy of mine (Daniel Mauser) from PFE (Premier Field Engineer) read my previous post about SSTP and sent me a note about his thoughts on the PKI side of the house (since is his specialty). The notes about the troubleshooting and planning phase from my previous post are: · For troubleshooting purpose...
  • Blog Post: Forefront TMG Malware Inspection False Positive Detection

    Recently I saw this thread on the TMG Forum and found it very interesting as it was quiet easy to repro. Yesterday Microsoft released a signature update that address this issue. The problem that TMG’s administrators were facing is documented here: From: http://www.microsoft.com/security/portal/Threat...
  • Blog Post: Description of Microsoft Forefront Threat Management Gateway definition updates

    We just released a new KB where we explain more details about Malware Inspection and NIS files. Check it out at http://support.microsoft.com/kb/2160835 .
  • Blog Post: Hey DC, are you still there?

    1. Introduction   Yesterday I wrote about the “perfect storm” case where the root cause was disk bottleneck, today I would like to discuss a troubleshooting scenario for one of the 5 core scenarios that was presented yesterday , which is called “authentication”. Again, the symptom was exactly the...
  • Blog Post: Unable to join a new Node on an existing TMG 2010 Array

    First of all, happy new year!! It took me a long time to come back here due many other projects going on…I’m actually feeling like I still in December as I didn’t really have time off during the holidays. Very different from Brazil (where I’m originally from), there things are slow during the holidays...
  • Blog Post: Incorrect Key Type when Creating a Web Lister on TMG using V3 Certificate

    Today I was assisting a friend of mine here from TMG team that was facing this issue, same issue that was also mentioned on this thread . The problem was happening when using Cryptography Next Generation (CNG) or also called V3, TMG was not recognizing the private key and was showing up this error message...
  • Blog Post: Monitoring Malware Through the Edge with Microsoft Forefront Threat Management Gateway

    I would like to share with you this article that I wrote for Microsoft Security Tip of the Month (November 2008). This article was reviewed by Yury Berezansky, Senior Developer from TMG Team in Haifa and responsible for the Malware Inspection feature in TMG. Check it out the complete article here...
  • Blog Post: TMG and IAG Sessions at TechEd Brazil 2008

    I will be delivering two sessions at TechEd Brazil this year, one about TMG and another one about IAG 2007. Steve Riley also is going to deliver four sessions and Steve Ballmer will present the keynote. It is going to be an amazing event and if you did not register yet it is better do it quickly at http...
  • Blog Post: Overview of New Features in TMG Beta 2

    My friend Tom Shinder that this week is up in Seattle to the MVP Summit just released Part 1 of an article that gives you an overview about the new features that TMG Beta 2 has. It is indeed worth reading it to have an idea of new functionalities and improvements that this Beta brings to you. Check it...
  • Blog Post: Unable to install Forefront TMG 2010 – Error 0x80074e46

    TMG installation problems can be a bit trick to troubleshooting if you don’t know which components are involved, however if you know then things start make more sense. Most of the setup problems that I faced up to now on TMG 2010 (since RTM) were related to ADLDS or some kind of domain connectivity problem...