Hi, John. I looked at that KB article, and I don't think that it
gives a complete or accurate description of how the Guest account
works in networked access. In my opinion, XP's "simple file
sharing", which uses the Guest account, is badly designed, badly
implemented, and hard to understand, and Microsoft's own
documentation gets it wrong.
The section on "Using the Guest account on the local computer" is
about configuring the Guest account in Control Panel > User
Accounts (where it's disabled by default). However, that has
nothing to do with whether other computers can access this
computer's shared resources over a network. It only determines
whether a user can log on as Guest at the local keyboard and what
privileges such a user has on the local computer.
There's a different setting that determines whether the Guest
account is allowed to have access to shared resources over a
network, and that setting is enabled by default. You can control
that setting by typing these commands in a command prompt window
(Start > Run > cmd):
Enable:
net user guest /active:yes
Disable:
net user guest /active:no
After much searching, I found an accurate description of this on
one Microsoft web page:
http://www.microsoft.com/technet/security/advisory/906574.mspx
In the section "Frequently Asked Questions", it says:
"How do I disable the Guest account on a Windows XP Home system?
At a command prompt, type Net User Guest /Active:No to disable the
guest account on workgroup joined systems. Disabling the guest
account will block Simple File Sharing".