Creating a secure 802.1x wireless infrastructure using Microsoft Windows

My name is Prachand and I am an SE on the Platforms Networking Team. My intent of this post is for it to be a quick reference guide for setting up secure wireless networking using Microsoft products. It describes how to create an infrastructure for authentication, authorization, and accounting for wireless connections using Microsoft RADIUS… Read more

New Networking-related KB articles for the week of March 7 – March 13

We have a pair of new networking-related Knowledge Base articles to share this week: 977694 Stop error message when you access shared files in Windows Server 2008 or in Windows Vista: 0x00000044 or 0x000000CC 980295 Windows 7 or Windows Server 2008 R2 does not respond to 802.1X authentication requests after the authentication fails – Mike… Read more

New Networking-related KB articles for the week of February 7 – February 13

We have had a couple of lean weeks recently with very few new KB articles to report, but that is certainly not the case this time around! Here are the latest networking-related KB articles: 979554 The creator of an SNMP trap notification cannot be identified in Windows Server 2003 978972 Stop error message when you… Read more

New Networking-related KB articles for the weeks of December 13 – December 19 and December 20 – December 26

I hope everyone is enjoying the holiday season. Here are the latest networking-related Knowledge Base articles published in the past 2 weeks: 961186  NDIS 5.x USB network adapters do not appear in Performance Monitor 961256  The DNS PTR record might be deleted if you change the DNS server order on a Windows 2003 machine 977172 … Read more

Possible problems seen after upgrading Windows XP clients to SP3 in an environment that uses wired 802.1x

If you are using Wired 802.1x, upgrading your Windows XP clients to Service Pack 3 can cause some severe issues due to design changes in this area. The following information is intended to provide some background information on these changes and how to work around them. Although most these issues are documented in separate Knowledge… Read more

New Networking-related KB articles for the week of June 14 – June 20

952790  An application is unable to obtain an exclusive lock to a volume after the system runs for several hours in Windows Server 2008 or in Windows Vista Service Pack 1 953270  After a Windows Vista-based computer resumes from hibernation, the computer waits 30 seconds before it starts connecting to a new wireless network 952876 … Read more

How to deploy XP SP3 in an existing wired 802.1x environment

Prior to SP3, the 802.1x service for XP is the Wireless Zero Configuration Service.  This service handles the 802.1x needs for both wired and wireless connections.  This has been problematic since not everyone uses wired 802.1x.  Also, because the wired 802.1x engine listens passively for EAP Identity traffic, we are not fully compliant with the… Read more