Various r-commands are available under Digital TCP/IP Services (UCX),
and the contents of /$HOME/.rhosts are analogous to what OpenVMS calls
Under UCX, the OpenVMS proxies used for rcp, rlogin and rsh are accessed
via the UCX management utility:
$ RUN SYS$SYSTEM:UCX
UCX> ADD PROXY user/HOST=host/REMOTE_USER=user
Additional information on this topic is available in the "R" commands
section of the )Digital TCP/IP Services for OpenVMS Management_ manual.