Security gain from NAT (was: Re: Cool IPv6 Stuff)
Edward B. DREGER
eddy+public+spam at noc.everquick.net
Mon Jun 4 21:12:05 UTC 2007
JS> Date: Mon, 04 Jun 2007 12:20:38 -0700
JS> From: Jim Shankland
JS> If what you meant to say is that NAT provides no security benefits
JS> that can't also be provided by other means, then I completely
What Owen said is that "[t]here's no security gain from not having real
IPs on machines". That is a true statement.
Provider: "We're seeing WormOfTheDay.W32 from 18.104.22.168."
Downstream: "That's our firewall."
Provider: "Chances are you have one or more compromised hosts behind
Downstream: "But we have 150 workstations. How do we find which
Bonus points for finding downstreams who understand "NIDS", "monitor
port", "state mapping tables", et cetera. :-)
In the big picture, I submit that NAT *worsens* the security situation.
Of course, the cost falls to "other people" -- a topic that inevitably
launches a protracted thread.
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