Binary package “latd” in ubuntu focal
LAT (Local Area Transport) Daemon
This is a server for DEC LAT. It allows users to log in to the Linux
system from a LAT terminal server and also the creation of "reverse" LAT
ports on the system that connect to other LAT services on the network.
.
There is also an llogin utility that allows users to login to remote
LAT services and a moprc utility for managing terminal servers remotely.