On the pfsense side there is one OpenVPN encryption setting supported.  It
is the difference between usable and usable encryption links.  Though it is
lower then the settings I would prefer for end users.  Seems fine for
running links across the cable companies network.

These guys carry a pretty good variety of small low power systems:

http://www.hacom.net/catalog/jupiter-iv-1u-server-pfsense-appliance?gclid=CJHwy8TY5boCFQdyQgodaQYABA




On Thu, Nov 14, 2013 at 5:34 PM, Keith Lofstrom <[email protected]>wrote:

> On Thu, Nov 14, 2013 at 12:32:24AM -0800, Chris Schafer wrote:
> > I have friend who used a lot of those boxes running pfense and had lots
> or
> > performance problems with any applications that required encryption or
> > decryption.  Also had a high failure rate.  Which wouldn't have been a
> > problem except they would fail in interesting ways.  Several couldn't
> push
> > 10Mbe on one of their interfaces.  Wasn't a configuration because
> identical
> > models running identical code was fine.  Makes you look really bad when
> it
> > really is not the cable companies fault that you can't push a solid 3 Mbe
> > link.
>
> I run two Alixes (Ali?) as firewalls at two sites, both running a
> stripped-down version of the CentOS 5 distro, and connected to
> each other, my outside servers, and road warriors with OpenVPN.
> I have not seen the failures Chris talks about, though I keep a
> third ALIX ready as a spare, just in case.
>
> I don't really know about performance.  They move unencrypted
> bits through the FIOS link just fine (15Mbps upload, 5Mbps
> download, as advertised), and rsync backups over the VPN
> from a server in California are just a little slower.
>
> The AMD Geode that drives these machines has an encryption engine
> that OpenVPN is not currently using.  Perhaps that can help with
> speed, if someone tells me how to engage it.  Also, in both cases
> I shove all the logging bits (unencrypted) to local servers, so
> I do few writes to the compact flash card I use as main storage.
> If I did more local read/writes, I imagine the ALIX would be a
> lot slower and less reliable.
>
> I am using "x133" CF cards.  8GB cards are $10 from Newegg, and
> I only use about 1.2GB of that.  Are faster cards worth it?
>
> While I do not need Yet Another Spare, it would be good to prove
> the usability of these machines, so that more local users would
> have them, and more people could teach me to do it right.  So if
> anyone can suggest some easy measurements, or do them in their
> own lab, perhaps we can demonstrate the quality and speed of
> these little machines, either to convince others to join us,
> or to find a better alternative.  Either way, we should use
> what PTP uses, and leverage from their experience.
>
> If I upgrade from an Alix, I would like something small, X86,
> solid state, low power (4 watts or less), and inexpensive.
> I don't know of anything better in that class.
>
> Keith
>
> --
> Keith Lofstrom          [email protected]
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