Penetration Testing: Re: spoofing 255.255.255.255 techniques

[Blake Frantz <blake () mc net>]

> 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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