Web server spoofing

[Bob Rasmussen]

I am investigating strange entries in our web server's access log, in which
our server is being told to GET a cgi on a porno site (nakedgirls.com). I
suspect that the porno site has a long list of other companies' web servers,
which are used at random, perhaps to a) shove the traffic load off onto other
(unsuspecting) sites, and/or b) to sidestep filtering software. My questions:

1. Has anyone else noticed this?

2. Are my guesses right about what they're trying to accomplish?

3. Am I being damaged by this?

4. How can I prevent it (my web server is Apache)?

Regards,
....Bob Rasmussen,   President,   Rasmussen Software, Inc.

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