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Network Security Pen-Test
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VPN protocols

Subject: VPN protocols
Date: Wed, 22 Dec 2004 07:43:23 -0600
I am not very up on VPN protocols, I am testing a network that
has an edge router which has several site-to-site VPN's set up
and several clients connecting to it via MS PPTP client.

I know that the router has gre and esp and tcp 1723 open

A standard Nessus scan shows 1723 but doesn't pick up gre or esp

What setting might I look for in Nessus to allow it to see gre and esp?

What kinds of tests should be run against these next?

Thanks

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