Home Server

https://unix.stackexchange.com/questions/57656/how-to-access-a-machine-behind-a-restricted-nat-gateway-i-dont-manage

https://security.stackexchange.com/questions/155159/how-to-directly-connect-to-devices-behind-nat-from-the-internet

https://superuser.com/questions/37738/how-to-reliably-keep-an-ssh-tunnel-open

https://superuser.com/questions/470945/using-vnc-to-control-pc-behind-nat

https://fortiguard.com/appcontrol/41536

https://xpra.org/trac/wiki/Authentication

https://www.stunnel.org/

http://www.zensur.freerk.com/#4.3.5.4

https://www.chiark.greenend.org.uk/~sgtatham/putty/

https://github.com/proxytunnel/proxytunnel/pull/38/files

https://github.com/Athlon1600/php-proxy

http://proxytunnel.sourceforge.net/paper.php

https://sebsauvage.net/punching/

https://unix.stackexchange.com/questions/479/keep-ssh-sessions-running-after-disconnection