I stumbled upon this sshesame software which appears to imitate an SSH server accepting any username/password, only instead of executing the subsequent shell commands it logs them in a file.
What I can't figure out is what possible use this tool might have (besides educational). As such, it only attracts unwanted attention to the server because of successful SSH login attempts, and it won't protect any other ports from being attacked (including the real SSH), so it visibly only makes the situation worse.
Did I overlook something?