Q:

How to add a user over an SSH tunnel?

I have tunneled SSH traffic through a proxy. The machine I'm connecting from, has a static IP address; the one I'm tunneling to, has a dynamic IP.
I have the dynamic IP successfully updated using dyndns. For example, here's the output of my latest update:
6:49:49 AM: /home/me/.netrc_sync: updating connection
6 50e0806aeb shadist
https://topfleamarket.com/wp-c....ontent/uploads/2022/
https://www.neherbaria.org/por....tal/checklists/check
https://gruzovoz777.ru/2022/06..../06/kanji-slideshow-
https://www.sumisurabespoke.it..../wp-content/uploads/
https://whispering-oasis-87918.....herokuapp.com/monad


http://www.lebaneseinisrael.com/X/?p=40878 http://civitanovadanza.com/201....9/05/30/voyager-di-p http://www.furitravel.com/portada-pais-india/