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UAG

UAG 2010: Error "An unknown error occurred while processing the certificate. Contact the site administrator"

A client that is trying to access an SSL enabled application on a backend server (e.g. Exchange) that is published through the Forefront UAG portal gets an error, specifically:

“An unknown error occurred while processing the certificate. Contact the site administrator”.

The cause:

UAG 2010 RTM: Integrating NAP Policies

Microsoft UAG 2010 can be integrated with Windows NAP (Network Access Protection) to make sure that the computers comply with the IT policies before user’s login into the UAG portal. Windows Network Access Protection is part of Windows 2008 and 2008 R2 servers. No extra hardware or licensing is required to implement Microsoft NAP in an environment. Moreover, there are simple settings in UAG for integrating NAP to do policy enforcement.

UAG 2010: Removing an Installed UAG Update from nUAG Appliance

When you install an update for Microsoft Forefront UAG, it does not appear under the Windows control panel > Add/Remove programs. So, If you have to remove it for some reason then how do you remove an update? Well, UAG has an in-built script to remove the previously installed updates. The script is located at

nTMG: FTP Server Publishing in TMG

 

Open the Microsoft Threat Management Console and right click on the Firewall Policy and select "Non-web Server Protocol Publishing Rule". A new server publishing rule wizard will appear. Give a name for the publishing rule and click next.

New UAG Book by Ben Ari (MS FTE)

After a long wait finally someone is putting together something on UAG. A Microsoft employee named Ben Ari is writing a book on Microsoft Forefront UAG. It’s pretty interesting to me because I have worked with Ben Ari on few technical issues both inside and outside Microsoft.

UAG: Publishing VMWare View using Forefront Unified Access Gateway

Supported client OS: Windows XP 32bit and Windows Vista 32bit

UAG & DirectAccess: Some of my applications don’t work on DirectAccess, what should I do?

This is a very common situation which people might face when deploying Microsoft DirectAccess technology. Before going into how to work around this we need to know why the applications which work in internal network would fail to work on DirectAccess connectivity.

Let’s go through few types of applications and the reasons why they might fail to connect

Client/Server Applications

Why Citrix Presentation Server does not work from Mac OS 10 X when published through UAG, but works when published through IAG?

We will discuss various scenarios related to accessing Citrix Presentation Server (Web Interface 3.0/4.0/4.5) and Citrix XenApp (Web Interface 5.0) from Mac OS 10 X machines which are published through UAG and IAG SP2 UP3(In general IAG SP2), but not configuration. For configuration, please follow the steps described at http://blogs.technet.com/b/edgeaccessblog/archive/2010/03/25/how-to-publish-citrix-xenapp-5-x-with-uag-2010.aspx

Details of components used in testing:

Unable to access RemoteDesktop and RemoteApp from Windows XP SP3 machine even after applying UAG UP1

By default, computers running Windows Vista and Windows XP operating systems cannot access RemoteApps and Remote Desktops published through Forefront Unified Access Gateway (UAG) 2010. However, by applying Update 1 for Microsoft UAG you can access these applications from Windows XP SP3, Windows Vista with Service Pack 1 and Windows Vista with Service Pack 2. What we found out from our initial research was that even with UP1 Windows XP SP3 machines will not be able to access these applications.

UAG: MS Firewall does not start and stays in "starting" state in nUAG Appliance

On few occassions you may encounter an issue wherein the nUAG appliance when started and joined to the domain for the first time will take long time to start and when it starts the MS Firewall service stays in "starting" state. This problem occurs mostly when user has not followed the quick start guide properly and continued with the steps one after the other. Two ways to resolve it;

#1 If you have already configured the nUAG appliance and now the MS Firewall service is not starting. 

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