When you want to suspend an rlogin connection so you can return to it later, type the tilde character (~) followed by Ctrl-Z. The rlogin connection becomes a stopped process and you are placed back at the machine from which you logged in.
To reactivate the connection, type fg. You can also type the percentage sign (%) followed by the process number of the stopped process. If you do not specify a process number, % activates the process most recently suspended.
venus$ rlogin goddess -l user2 Password: Last login: Thu Aug 31 14:31:42 from venus Sun Microsystems Inc. SunOS 5.9 Generic February 2002 goddess$ pwd /home/user2 goddess$~^Z Stopped (user) venus$ pwd /home/user2/veggies venus$fg rlogin goddess goddess$ logout venus$
For more information on the rlogin(1) command, refer to the man Pages(1): User Commands.