An AMD Ubuntu Server was setup remotely and “dockered” with HA. Because the OS is Ubuntu, the WAN port 22 is forwarded to the Ubuntu box so I can tunnel into the network from the command line: this enables a web browser to tunnel and access devices on the remote LAN.
A raspberry pi 3b+ will replace e the AMD Ubuntu Server. The rPi 3B+ is outfitted with a SSD: HA Operating System. To maintain SSH tunneling, I need to open up port 22 of the rPi HA OS: by default the connection is refused. I thought that this procedure would open port 22:
However, the procedure does not open port 22 for WAN access. I understand that there is risk, however, I need to able to tunnel in to the LAN.
Is there a similar weblink procedure that opens port 22 for access to the SSH server?
Update: rPi HA OS seems to be a busysbox distro, which does not include SSH functionality. This article indicates that dropbear adds SSH server capability linux - How to enable SSH on BusyBox without recompiling BusyBox? - Stack Overflow
Can anyone confirm? Confirm with experience adding dropbear?