RE: Nimda Worm Mitigation

From: Jason Lewis (jlewisat_private)
Date: Tue Sep 18 2001 - 19:52:33 PDT

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    Anyone doing anything different?
    
    How about something that tails an apache log file and adds ipchains rules to
    kill infected IP's? Anyone want to write it?
    
    -----Original Message-----
    From: John Davidson [mailto:jwd_odsat_private]
    Sent: Tuesday, September 18, 2001 7:56 PM
    To: incidentsat_private
    Subject: Nimda Worm Mitigation
    
    
    I have been able to reduce the effect of the Nimda worm by implementing Host
    Headers. Now every nimda originated request gets a 404, before some were
    sent a 404, but also some error 500.
    
    This works because the worm scans base on IP only.
    
    Its not much of a help but the logs are now under control. Scans are about
    10 times that of CodeRed.C so far.
    
    John Davidson
    
    
    
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