State Servers

A state server is the place where ClearBox Server stores information about established connections that are currently opened. When a connection is opened, and a user's session starts, ClearBox uses the accounting request to add an entry to the state server about this session. When the session is terminated, ClearBox removes this entry from the state server.

State servers are used by ClearBox to perform 'double-logon prevention', i.e. to control the number of sessions a user may start simultaneously. You may configure this value as a global realm value, when this limit is checked for every user authenticated in the realm, or for a particular user. In the latter case the limit value is retrieved from a database.

State server is implemented as a database table, where all rows represent current connections to NASes. All you need when setting up a new state server is to specify SQL queries used to add a row, remove it, or clear all entries when a NAS reboots.

See how to configure a state server with Configurator Tool.

Click 'Apply Changes' when you specify all the necessary state server settings.