Controlling the use of undefined terminals

You can also use RACF® to control the use of undefined terminals that are connected to your system. To control the use of undefined terminals, you must first activate the TERMINAL class as shown above. After the TERMINAL class is active, you can control whether users can log on to undefined terminals by issuing the SETROPTS command with the TERMINAL operand. The TERMINAL operand specifies the universal access authority, either READ or NONE, that RACF associates with undefined terminals on your system.

To allow undefined terminals to be used for logging on, enter:

SETROPTS TERMINAL(READ)

To prevent undefined terminals from being used for logging on, enter:

SETROPTS TERMINAL(NONE)

Important: Before you specify NONE, be sure that you define some terminals to RACF and give the appropriate users and groups proper authorization to use them. Otherwise, no one can log on to your system.