On Sun, 27 Dec 2020 14:27:46 +0000
Chris Green  wrote:

> The Natural Philosopher  wrote:

> > Just use an IP capable dongle forget about 'incoming calls' and ssh
> > riught in. Biggest problem will be on what IP address you appear,
> >
> Yes, as I said it needs a dynamic DNS service but that's all.
>

It is possible to get a fixed, public IP address on a 4G SIM, but it
takes a bit of finding. Even then, the actual IP address is dynamic and
private, but the 4G operator runs a NAT server to accept calls on a
fixed public address and route them to the SIM.

It's a common requirement, and the magic codeword is 'M2M' (machine to
machine). You'll probably need to go to a specialist SIM provider, the
average high-street phone shop salesman won't have a clue what you're
talking about.

--
Joe

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