[Elecraft] K4 Remote Lives and Breathes!

[Nate Bargmann]

* On 2023 15 Dec 11:47 -0600, KJ7SOY wrote:
> Rick:
> 
> The problem is not dynamic IP addresses changing. That’s easy to fix.
> It’s CG-NAT (Carrier Grade Network Address Translation), which doesn’t
> give you an external world addressable IP address. You can’t assign a
> DDNS name because you don’t HAVE an IP address to map to. Many
> carriers (T-Mobile is a perfect example) are now using this approach,
> which blocks customers from getting to their devices/services from
> outside their home networks. 
> 
> The only solution is to use a commercial tunneling VPN or a free
> service like ngrok, which creates a permanent tunnel to external
> servers which DO have addressable IP addresses. 

I faced such a dilemma some years back when it looked as though we would
need to rely on a cellular router for an ISP.  Fortunately, that didn't
become a permanent solution.

My solution was setting up an AWS instance to which I set up a reverse
SSH tunnel from home and then I could SSH to it from elsewhere and
connect to the reverse tunnel.  Conceptually it's somewhat like a VPN
only it had some manual steps in place.  I now have a similar setup from
a Raspberry Pi running AllStar at a repeater site that connects to a
local system and sets up an SSH reverse tunnel end point.  I did try to
set up a Wire Guard VPN a few years back but had no luck  Perhaps I need
to revisit that idea since things have had a few years to mature,
including me!

73, Nate, N0NB

-- 
"The optimist proclaims that we live in the best of all
possible worlds.  The pessimist fears this is true."
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