[Olsr-users] High-level questions about encryption on OLSR ad-hoc mesh
Tue Mar 22 14:08:40 CET 2011
On Tuesday 22 March 2011 14:02:28 L. Aaron Kaplan wrote:
> On Mar 22, 2011, at 8:16 AM, Ben West wrote:
> > Hi All,
> > In lieu of discussion about diminishing returns for enabling whatever
> > limited encryption is supported for adhoc/mesh modes, I'm curious if
> > anyone on the list has good experience using OpenVPN with OpenWRT
> > meshes?
> > I'm curious about the prospect of just setting up VPN tunnels thru the
> > unencrypted mesh as needed, but I would be wary of placing undue load
> > on any embedded CPU, whether in the access point or in a downstream
> > router.
> As you already mentioned, encrypting and decrypting all the traffic on
> small embedded devices can be quite CPU hungry. OpenVPN is great, but it
> has one additional minor drawback: all traffic goes to userspace and back.
In theory IPsec could be used for this without this drawback. In practice its
more difficult to setup.
1) You can't win.
2) You can't break even.
3) You can't leave the game.
— The Laws of Thermodynamics, summarized
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