Re: Re: Odd sendmail behavior

From: Nigel Frankcom (nigel@blue-canoe.net)
Date: Thu Sep 05 2002 - 13:32:03 PDT

  • Next message: Kerry Thompson: "Re: new type of formmail probes"

    Just a thought....
    Could it be a probe for a webmail interface?
    
    On Thu, 05 Sep 2002 13:07:29 -0700, you wrote:
    
    >At 9/5/2002 11:34 AM, Etaoin Shrdlu wrote:
    >
    >>I saved a full session of one of the attempts on my local machine (seven
    >>packets worth) from ethereal. There was also an initial attempt to validate
    >>as user "tcpwrappers" which I found a bit odd. Those are the only things
    >>beyond log entries, and of course the packets are incomplete (since the
    >>attempts were blocked). The odd and unique thing is that the initial
    >>payload was:
    >>
    >> > GET http://www.yahoo.com/ HTTP/1.1
    >> > Host: www.yahoo.com
    >> > Accept: */*
    >> > Pragma: no-cache
    >> > User-Agent: Mozilla/4.0 (compatible; MSIE 4.01; Windows 98)
    >
    >That looks like someone scanning for a proxy server.  Typically these scans 
    >are limited to ports 80, 1080, 3128, and 8080, but maybe somebody has found 
    >a reason to look for proxy servers on SMTP ports.
    >
    >Michael Katz
    >mikeat_private
    >Procinct Security
    >
    >
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