[rlonstein]

> I really doubt there's any reason to use zmodem over SSH other than convenience if you happen to know it better than the alternatives.

You might not have encountered it.

Here's the use case: the ssh session terminates at a bastion host running a restricted sshd that drops port forwards and punts the connection to an internal landing host which is not permitted to ssh out.

Using an in-band file transfer protocol is incredibly useful.