https://www.howtogeek.com/168145/how-to-use-ssh-tunneling/
    ! dynamic port forwarding

https://habr.com/ru/post/331348/
https://habr.com/ru/post/122445/

local forwarding
https://www.ssh.com/academy/ssh/tunneling/example#local-forwarding

firefox proxy
https://www.howtogeek.com/293213/how-to-configure-a-proxy-server-in-firefox/
    ! about-preferences: 127.0.0.1:8888
    ! no proxy for localhost, 127.0.0.1

2024
https://habr.com/ru/articles/804263/
    https://www.youtube.com/watch?v=GBx3KEcuKFA
2023
https://ittavern.com/visual-guide-to-ssh-tunneling-and-port-forwarding/
2022
https://medium.com/linuxstories/linux-how-to-create-an-ssh-tunnel-as-a-systemd-service-73e6e0fff19b
https://iximiuz.com/en/posts/ssh-tunnels/
https://robotmoon.com/ssh-tunnels/
    https://habr.com/ru/companies/flant/articles/691388/
2021
https://goteleport.com/blog/ssh-tunneling-explained
https://linuxiac.com/how-to-use-ssh-tunneling/
2018
https://hackertarget.com/ssh-examples-tunnels/
    https://habr.com/ru/articles/435546/