From: ndav1@cox.net   
      
   Can anyone suggest what type of device would rewrite sequence numbers in   
   a connection.   
      
   I have traces from both sides of a connection going between 2 systems 5   
   hops apart. The packets have the same IP addresses, ports, IP ID values,   
   packet length, and data. The one thing that is different are the   
   sequence numbers. Each side sees a consistent set of sequence numbers so   
   the connection progresses without problems but the sequence numbers are   
   completely different at each host.   
      
   It is almost as if there is a proxy between the two but I would expect a   
   proxy to rewrite the ID values and possibly at least one of the IP   
   addresses and port numbers.   
      
   Any suggestions would be appreciated.   
      
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