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This procedure is very important because Telnet automatically configures virtual
devices. If the QLMTSECOFR value is set to 0, all devices automatically configured
by Telnet can be used by the security officer. If you set the QLMTSECOFR value to
1, your security officer is not able to use the virtual devices created by Telnet unless
you grant object authority to the security officer for that virtual device. The automatic
configuration support can delete and re-create the virtual device. If this occurs,
authority must be granted to the security officer each time the virtual device is
created.
Step 4—3270—Working with Associated System Values
In addition to the QAUTOVRT and QLMTSECOFR, the following system values are
available for you to work with from the Configure TCP/IP Telnet (CFGTCPTELN)
menu:
v QINACTITV: Inactive job time-out
v QINACTMSGQ: Inactive job message queue
v QLMTDEVSSN: Limit device sessions
v QMAXSGNACN: Action to take for failed sign-on attempts
v QMAXSIGN: Maximum sign-on attempts allowed
v QRMTSIGN: Remote sign-on control
v QDEVRCYACN: Device I/O error action
v QDSCJOBITV: Time interval before disconnected jobs end
Figure 122 on page 192 shows the Configure TCP/IP Telnet (CFGTCPTELN) menu.
Setting the Telnet Timemark Timeout Value:
You should also take into
consideration the TIMMRKTIMO parameter.
The Telnet timemark timeout (TIMMRKTIMO) parameter specifies the number of
seconds between TIMEMARK commands sent by the Telnet server. If Telnet is
unable to send the TIMEMARK command, it closes the connection.
Step 5—3270—Creating Virtual Controllers and Devices
You can create virtual controllers and devices. If you create your own virtual
devices, by allowing the system to automatically select the device name, you must
be aware of the following:
v The virtual controller must be named QPACTLnn, where nn is a decimal number 01
or greater.
v The virtual device should be named QPADEVxxxx, where xxxx is an alphanumeric
character from 0001 to ZZZZ.
Note: Starting with Version 4 Release 2, the xxxx are no longer only numeric
characters, but also alphanumeric characters from 0001 to ZZZZ, allowing
a maximum of 1,679,615 unique names (devices).
If you want to use more than 32500 devices, which is the maximum value
for the QAUTOVRT system, you can set the QAUTOVRT system value to
*NOMAX to allow additional devices to be created.
v The Telnet server reuses available existing virtual devices that were auto-created
by selecting virtual devices of the same device type and model. When there are
no more device type and model matches, but there are still available virtual
devices, then the device type and model will be changed to match the client
190 OS/400 TCP/IP Configuration and Reference V4R4
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