[Gllug] KVM-over-internet

Robert McKay robert at mckay.com
Mon Feb 20 00:29:19 UTC 2012

On Sat, Feb 18, 2012 at 11:38 PM,  <damion.yates at gmail.com> wrote:
> On Tue, 31 Jan 2012, Rich Walker wrote:
> [snipped]
>> This isn't server installations, unfortunately - it's specific embedded
>> hardware being delivered as part of a package, with a customer whose
>> network is usually locked down in all sorts of ways. The KVM->router->3G
>> dongle approach will probably be the final solution...
> (*) I have never known a 3G connection to ever provide you with anything
> like an IP you can connect to via the Internet, they're always NATed and
> firewalled.  This could put a complete dampner on this whole idea.
> The only ways I can see this working are if a) your mobile provider let
> you have an IP (ideally static) which permits in bound connections.
> This is HIGHLY unlikely.  Or b) you create a tunnel, such as
> ssh -R 5900:localhost:5900 -g some.special.host.you.trust
> Then you can connect to some.special.host.you.trust:5900 and have it
> connect to the raritan's VNC port.

Three supply dynamic IPs which are reachable from the internet. That
+dyndns works well. You can also get static IPs from specialist
providers such as andrews & arnold who resell three's service. You can
even get a&a to terminate the 3g on your own L2TP server so that you
can use your own internal addressing. This would be ideal and infact
is great (I've used it) but their pricing is more expensive than some
of the really cheap options.

When using a NAT only provider I've found that teredo works quite
well. On Linux miredo + IPv6 dyndns provides a fairly robust 'way back
in'.. of course it's IPv6 only.

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