This info was sent to me by my Microsoft technical account manager. It is in
no way a reply to Russ's messages, but it's germane to the issue so I
thought I'd pass it along (though he did ask me to remove his name).

Mike Reed
NT Systems Engineer
IBM Global Services - Cable & Wireless Account
Vienna, VA

==============================================================

There's been lots of speculation about whether Personal Web Server is
affected by the Code Red worm. Here's some info that may help explain the
situation:

Personal Web Server can be installed on Win95, 98, Me or Windows NT 4.0
workstations.

Although it has some code in common with IIS 4.0, it is not IIS 4.0. In
particular, one piece it lacks is the Index Sever ISAPI Extension.

The vulnerability that the Code Red worm exploits (see security bulletin
MS01-033) lies within the Index Server ISAPI Extension. Because PWS lacks
this code, it is not vulnerable to the Code Red worm.

There is no such thing as PWS on Windows 2000. If a customer has a web
server on Windows 2000 -- even Windows 2000 Professional -- it's IIS 5.0,
and is vulnerable to the Code Red worm.

IIS 5.0 installs by default as part of Windows 2000 server products, but
does not install by default on Windows 2000 Professional. There is,
however, one exception -- if a Windows NT 4.0 Workstation is upgraded to
Windows 2000 Professional and it has PWS installed, PWS will be upgraded to
IIS 5.0.

Regards,

<Name removed by request>

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