Re: new worm? or DDoS attack in progress

From: Birl (sbirlat_private)
Date: Wed Jul 30 2003 - 12:16:39 PDT

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    As it was written on Jul 29, thus Jon Zobrist spake unto incidents:
    
    Jon:  Date: 29 Jul 2003 15:56:50 -0600
    Jon:  From: Jon Zobrist <jzobristat_private>
    Jon:  To: incidents <incidentsat_private>
    Jon:  Subject: new worm? or DDoS attack in progress
    Jon:
    Jon:  Seems more and more clients are picking up the pace, as our proxy is
    Jon:  getting more and more requests.
    Jon:  in thttpd's logs it looks like
    Jon:
    Jon:
    Jon:  IPADDRESS - - [29/Jul/2003:15:47:38 -0600] "UNKNOWN  UNKNOWN" 400 0 ""
    Jon:  ""
    Jon:
    Jon:  each client seems to be making between 1 and 5 requests/second
    
    
    Is this log excerpt literal?
    Does it literally say "IPADDRESS" where the IP address should be?
    
    
    I cannot say Ive seen method of "UNKNOWN" for either Apache or IIS on my
    webservers, but I have seen entries such as this:
    
    155.247.166.60 - - [29/Jul/2003:00:13:18 -0500] "- - HTTP/1.0" 500 239
    
    Where 155.247.166.60 is our webserver proxy'ing to another webserver.
    
    
    
    Thanks
    
     Scott Birl                              http://concept.temple.edu/sysadmin/
     Senior Systems Administrator            Computer Services   Temple University
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