zssh 1.5c.debian.1-6 (amd64 binary) in ubuntu cosmic

 zssh (Zmodem SSH) is a program for interactively transferring files to a
 remote machine while using the secure shell (ssh). It is intended to
 be a convenient alternative to scp, allowing to transfer files without
 having to open another session and re-authenticate oneself.
 .
 Files are transferred through the zmodem protocol, using the rz and sz
 commands.