- Run
sshddaemon
# systemctl start sshd- Make reverse SSH connection
$ ssh -R 2222:localhost:22 user@host-with-white.ip- Connect to natted device through tunnel
# ssh natted-device-user@localhost -p 2222- Accept key and enjoy!
sshd daemon# systemctl start sshd$ ssh -R 2222:localhost:22 user@host-with-white.ip# ssh natted-device-user@localhost -p 2222