Arguing against using public IP space

Jay Ashworth jra at baylink.com
Tue Nov 15 20:55:42 UTC 2011


----- Original Message -----
> From: "Valdis Kletnieks" <Valdis.Kletnieks at vt.edu>

> And this is totally overlooking the fact that the vast majority of *actual*
> attacks these days are web-based drive-bys and similar things that most
> firewalls are configured to pass through. Think about it - if a NAT'ed
> firewall provides any real protection against real attacks, why are there still
> so many zombied systems out there? I mean, Windows Firewall has been shipping
> with inbound "default deny" since XP SP2 or so. How many years ago was that?
> And what *real* security over and above that host-based firewall are you
> getting from that appliance?
> 
> Or as Dr Phil would say "FIrewalls - how is that working out for you?"

Do you have actual honest-to-ghod numbers, Valdis?

And aren't you making here the same assumption for which we chastise people
who run DNS resolvers that wildcard to advertising pages for NXDOMAIN:

That all the world's a workstation?

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com         2000 Land Rover DII
St Petersburg FL USA      http://photo.imageinc.us             +1 727 647 1274




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