nanog mailing list archives

Re: Is NAT can provide some kind of protection?


From: Valdis.Kletnieks () vt edu
Date: Wed, 12 Jan 2011 16:22:51 -0500

On Wed, 12 Jan 2011 16:05:42 EST, Scott Helms said:
That's simply not true. Every end user running NAT is running a stateful firewall with a default inbound deny.

Really?  I just tested this with 8 different router models from 5 
different manufacturers and in all cases the default behavior was the 
same.  Put a public IP on a PC behind the router

At which point you're not running NAT, so it's a different configuration than
the one under discussion.

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