Security Basics mailing list archives

Re: inter-site WAN security question


From: Ansgar -59cobalt- Wiechers <bugtraq () planetcobalt net>
Date: Thu, 5 Jul 2007 22:22:27 +0200

On 2007-07-04 nobledark () hushmail com wrote:
So if I understand you correctly, if someone were sniffing on a router
between the two sites and the VPN was in tunnel mode then they would
not be able to see the source and destination IP's - is that correct?

Not exactly. They won't be able to see the source and destination IP of
hosts behind the VPN endpoints. They will, however, still be able to see
the source and destination IPs of the VPN endpoints, so they'll still
know that s1 and s2 are communicating with each other, although they
might not be able to identify which particular hosts of each site are
communicating.

Regards
Ansgar Wiechers
-- 
"All vulnerabilities deserve a public fear period prior to patches
becoming available."
--Jason Coombs on Bugtraq


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