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ISP put me behind NAT
(lemmy.world)
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this post was submitted on 11 Nov 2023
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While I use ssh tunneling to access systems on a temporary basis, usually http, some caveats:
I don't know of a daemon to set up locally that will re-establish tunnels on power loss and the like. Not technically-difficult, but something one probably wants if this is going to be how he's gonna get at the system long-term rather than "I just need one-off access".
One other downside -- the service that the user here is aiming to expose is apparently ssh. For me -- reaching an http server -- wrapping the connection for remote use is desirable. For him, it probably isn't, as there'll be two layers of encryption. Not the end of the world, but it's a hit. You do want encryption in the outer protocol at least insofar as you need it to protect authentication to the VPS anyway.
For reestablishing the connection, use the wrapper 'autossh'. It can be run from systemd so that it'll auto start and restart as you command it.
I have a couple instances using this that are absolutely rock solid after years.
I need more ports to be exposed - I'm running secure DNS, Git on one port, Webmin on other, Jelllyfin (I can live without that on data), HTTP server on 800/443, Homeassistant 8123,... I also had 3389 open for remote desktop to my Windows machine, etc.
You can reduce some of those ports by using a reverse proxy. Do that you can access git home assistant etc from 443 with a subhuman.