Automatic Configuration of Virtual Devices (QAUTOVRT)

The Automatic Configuration of Virtual Devices (QAUTOVRT) system value specifies whether pass-through virtual devices and TELNET full screen virtual devices (as opposed to the workstation function virtual device) are automatically configured.

A virtual device is a device description that does not have hardware associated with it. It is used to form a connection between a user and a physical workstation attached to a remote system.

Allowing the system to automatically configure virtual devices makes it easier for users to break into your system using pass-through or telnet. Without automatic configuration, a user attempting to break in has a limited number of attempts at each virtual device. The limit is defined by the security officer using the QMAXSIGN system value. With automatic configuration active, the actual limit is higher. The system sign-on limit is multiplied by the number of virtual devices that can be created by the automatic configuration support. This support is defined by the QAUTOVRT system value.

Note: This system value is a restricted value. See Security system values for details on how to restrict changes to security system values and a complete list of the restricted system values.
Table 1. Possible values for the QAUTOVRT system value:
Value Description
0 No virtual devices are created automatically.
number-of- virtual- devices Specify a value 1 through 32500. If fewer than the specified number of devices are attached to a virtual controller and no device is available when a user attempts pass-through or full screen TELNET, the system configures a new device.

Recommended value: 0