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Date:      Thu, 06 Apr 2006 19:00:20 -0400
From:      Frank Laszlo <laszlof@vonostingroup.com>
To:        Chuck Swiger <cswiger@mac.com>
Cc:        fbsd_user@a1poweruser.com, "freebsd-questions@FreeBSD. ORG" <freebsd-questions@FreeBSD.ORG>
Subject:   Re: web server attack
Message-ID:  <44359D84.9020000@vonostingroup.com>
In-Reply-To: <44358FC6.3050000@mac.com>
References:  <MIEPLLIBMLEEABPDBIEGAEECHEAA.fbsd_user@a1poweruser.com> <44358FC6.3050000@mac.com>

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Chuck Swiger wrote:
> fbsd_user wrote:
> [ ... ]
>> Does anyone know what this is and what I can do to stop it
>> besides adding the ip address to my firewall block rules?
>
> I suppose that someone is trying to exploit mod_proxy to connect to an 
> SMTP server (that's the "CONNECT 4.79.181.15:25" part), or at least 
> get HTTP replies back.
>
> Make sure you don't have mod_proxy enabled in Apache....
>
>> 218-166-163-180.dynamic.hinet.net - - [06/Apr/2006:10:11:25 -0400]
>> "\x04\x01" 200 0 "-" "-"
>> 218-166-163-180.dynamic.hinet.net - - [06/Apr/2006:10:11:45 -0400]
>> "\x05\x01" 200 0 "-" "-"
>> 218-166-163-180.dynamic.hinet.net - - [06/Apr/2006:10:11:45 -0400]
>> "CONNECT 4.79.181.15:25 HTTP/1.1" 200 7014 "-" "-"
>> 218-166-163-180.dynamic.hinet.net - - [06/Apr/2006:10:11:46 -0400]
>> "GET http://www.ebay.com/ HTTP/1.1" 200 7014 "-" "Mozilla/4.0
>> (compatible; MSIE 5.00; Windows 98)"
>
Setup mod_security to block that type of request. Any chance you can 
capture some packets and send a link? I'd like to take a look at it.

-Frank



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