Re: spoofing 255.255.255.255 techniques

From: Blake Frantz (blakeat_private)
Date: Thu Jul 05 2001 - 19:13:58 PDT

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    > Our PIX does not indicate source or destination ports 
    > perhaps because the "IP spoof" criteria was already 
    > triggered in its logic chain, denying the packet and 
    > making a syslog entry.
    
    It's been my experience that the PIX will not provide port information if
    the packet is blocked by an ACL.  However, it *will* provide port
    information if the packet is blocked because there is no "conduit"
    allowing the traffic.
    
    I'm not sure if the spoof detection mechanism supercedes this.
    
    Hope this helps.
    
    -Blake
    
    
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