Microsoft Fixes VPN Flaw in XP SP2

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Published: Sep 21, 2004

Updated: Feb 2, 2021

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Microsoft has issued a formal fix for a problem in Windows XP Service Pack 2 that appeared almost immediately after the updates release.

The problem, which affected many VPN users, causes errors when programs attempt to connect to loop-back addresses other than 127.0.0.1. Service Pack 2 blocks all such addresses; users receive an error message saying that they cannot establish a connection.

Microsoft had issued a hotfix for the problem last month, but the new update is more thoroughly tested and available to all without having to go through Microsoft Product Support Services.

/zimages/2/28571.gifClick hereto find out why some IT administrators dont trust SP2s security.

The fix was not issued in the normal fix cycle, but that cycle applies mainly to security issues. This is the first formal fix issued for Windows XP SP2, which had no reported errors in the most recent patch day. The drag-and-drop flaw in SP2s Internet Explorer remains unaddressed.

/zimages/2/28571.gifCheck out eWEEK.coms Security Center for the latest security news, reviews and analysis. And for insights on security coverage around the Web, take a look at eWEEK.com Security Center Editor Larry Seltzers Weblog.

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Larry Seltzer

Larry Seltzer has been writing software for and English about computers ever since—,much to his own amazement— He was one of the authors of NPL and NPL-R, fourth-generation languages for microcomputers by the now-defunct DeskTop Software Corporation. (Larry is sad to find absolutely no hits on any of these +products on Google.) His work at Desktop Software included programming the UCSD p-System, a virtual machine-based operating system with portable binaries that pre-dated Java by more than 10 years.For several years, he wrote corporate software for Mathematica Policy Research (they're still in business!) and Chase Econometrics (not so lucky) before being forcibly thrown into the consulting market. He bummed around the Philadelphia consulting and contract-programming scenes for a year or two before taking a job at NSTL (National Software Testing Labs) developing product tests and managing contract testing for the computer industry, governments and publication.In 1991 Larry moved to Massachusetts to become Technical Director of PC Week Labs (now eWeek Labs). He moved within Ziff Davis to New York in 1994 to run testing at Windows Sources. In 1995, he became Technical Director for Internet product testing at PC Magazine and stayed there till 1998.Since then, he has been writing for numerous other publications, including Fortune Small Business, Windows 2000 Magazine (now Windows and .NET Magazine), ZDNet and Sam Whitmore's Media Survey.

Microsoft Fixes VPN Flaw in XP SP2

Larry Seltzer

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