Allied Telesis Support Portal

How to set up automatic deactivation of telnet sessions on 9700 series devices

How do I automatically set telnet sessions to deactivate after a period of inactivity?

Sometimes there are instances where one cannot telnet into a 9700 or 9810, despite credentials being correct.

This is compounded by the fact that others are logged into the same device. 

AI02 9700 10.52.216.20>> sh sessions                                                                                                                                                                                                     

--- Active (logged in) Users --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

 ID User                                                                               Port    Location                                                        Status Login Time                                                      Deact
                                                                                                                                                                                                                                      (secs)
 -- ---------------------------------------------------------------------------------- ------- --------------------------------------------------------------- ------ --------------------------------------------------------------- ------
 0  -                                                                                  Console local                                                           AUTH                                  -                                  -
 2  officer                                                                            Telnet  10.52.8.11                                                      CONN   2017-02-08 19:28:47                                               -
 3  officer                                                                            Telnet  10.52.8.12                                                      CONN   2017-02-08 19:28:47      
 4  officer                                                                            Telnet  10.52.8.13                                                      CONN   2017-02-08 19:28:47      
 5  officer                                                                            Telnet  10.52.8.14                                                      CONN   2017-02-08 19:28:47    
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------        
etc. 

By default, there are 10 concurrent sessions allowed. 
Normally, in order to free up connections, one has to hope that someone else is logged in and then have them issue a "deactivate session all" and then select "yes".

However, it is possible to  create a global rule which  does this automatically for all hung telnet sessions.
This command is "SET SYSTEM USERCONFIG SECUREDELAY 5", which will purge disconnected telnet sessions after 5 minutes.

The key word is "SECUREDELAY", which specifies the number of minutes that a user session can remain idle before it is automatically timed out.



 
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