The list of links does not, by default, maintain a heartbeat with the server. Users are automatically logged out of the Management and Security Server after 60 minutes if they are not actively using the links list.
To enable a heartbeat for the links list, you must modify the source of the login page. It is recommended that you make backup copies of both the original and modified login pages because any modifications will be overwritten by product upgrades.
In your login page, locate the section that begins with <mss:applet userequest="true"/>.
Add the heartbeat parameters you would like to set.