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Re: VPN over slow Internet connections
From: Valdis.Kletnieks () vt edu
Date: Thu, 21 Apr 2011 13:17:05 -0400

On Thu, 21 Apr 2011 17:55:32 BST, Ben Whorwood said:

   * How well would the connection handle certificate (>= 2048 bit key) 
based authentication?

It will hiccup for a moment (maybe a quarter or half second) for the data.  The
certificate exchange is the least of your problems.

   * Is VPN over this type of connection simply a bad idea?

Well, 33.6k is a Bad Idea right there. :)  But if you're stuck with that
for technical reasons, but need a VPN for security reasons, it won't
be all *that* much worse, unless you're doing a lot of SSH or similar
short-packet single-keystroke traffic, where the VPN overhead will
start being a bit painful.  Shouldn't be too hard to model the traffic
involved to see if it's too painful - FreeBSD has dummynet IIRC.

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