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From William C. (Bill) Jones <>
Subject [users@httpd] Slapper Worm Was (Re: Server stops working)
Date Wed, 09 Oct 2002 10:33:49 GMT
On Wednesday, October 9, 2002, at 01:39  AM, Robert Andersson wrote:

> Rupert Young wrote:
>> [Mon Oct 07 21:49:50 2002] [error] [client] client sent
>> HTTP/1.1 request without hostname (see RFC2616 section 14.23): /

> Someone or something did a HTTP 1.1 request to your IP, without 
> supplying
> the Host-header. It is needed by Apache to deside which 
> configuration to
> use, if you're using virtual hosts. This probably is a manual 
> entered query,
> that was too lazy to write the Host-header, or perhaps some poorly 
> written
> program.

Or, which is more likely, someone's server is infected with the slapper
worm (which came out two weeks ago) and now that server is trying to
infect your server.

For example,  see

"Well, in general, the thing I don't like about other
computer languages is that they're not Perl." -Larry Wall

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