RE: Net forensics question

From: Jonathan A. Zdziarski (jonathanat_private)
Date: Mon May 26 2003 - 08:51:54 PDT

  • Next message: Myke Place: "Re: Net forensics question"

    > What would explain the following scenario 
    
    With just those four tests to go on, I would start thinking that the address
    you are analyzing is either spoofed or no longer online.  A traceroute that
    bounces between two hosts is usually a sign of a routing loop as a result of
    the destination host being down.  This was more prevalent ten years ago, but
    I still see them today periodically.  DNS information (as well as a ping -a)
    completely relies on the authoritative server for the address space, so I
    would find out who the particular network belongs to and contact them.  A
    whois on arin.net's servers (or some other registry) ought to give you some
    contact information.  Finally, ping timeouts... are you certain that the
    reply you're receiving back is actually from the host?  If you increase your
    TTL in a traceroute, do you finally get somewhere?  It could in fact be
    coming from one of the routers in the loops if your TTL is expiring in
    transit.
    
    
    
    
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