Most Linux users are familiar with the SSH protocol as it allows remote management of any Linux system. It's also commonly used for SFTP to download or upload files. SSH is known as a very secure protocol because it encrypts traffic end to end. But the encrypted tunnels it creates are actually quite versatile and can be used for more than just remote server management or file transfer.
This is a companion discussion topic for the original entry at https://linuxconfig.org/ssh-port-forwarding