Firewall Wizards: Re: Borderware Ping Server

["Paul Zatychec" <zatychec () attcanada ca>]

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MJR wrote:
> Proxies are _only_ valuable if they do extended state tracking and
> error checking. Very few proxies actually _do_ that kind of extended
> tracking and checking. 
Amen - particularly regarding subtle error checking.  

Some time ago I seem to recall that Peter Cox of Borderware 
mentioned to me that they may have had thrusts into enhancing their 
product extensions in this regard - but my memory could well be 
inaccurate here.

> we could have 
> added not just attack defeating through good design, but specific
> detection of _known_ attacks. I.e.: let's say a web proxy defeats a
> WWW buffer overrun - identify the specific attack in the process of
> blocking it: now you've implemented what amounts to proactive
> intrusion detection and diagnosis. 
> That's a really useful model; 
Concur.  With only one audit trail to correlate and learn from that
tells
you how your _system_ handled it.

mjr makes the point about detection of known attacks, and I agree.  
What I'm not sure about is the extent to which we have made 
proactive use of extended error checking to dynamically profile 
_things_we_may_not_have_seen_before.
Comments?
pz

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