Chapter 15 Unified Threat Management for FortiOS 5.0 : Client Reputation : Viewing client reputation results : Client reputation data update and maintenance intervals
  
Client reputation data update and maintenance intervals
Client reputation updates its database every 2 minutes by querying the log database for client reputation information. This means that data displayed in the client reputation monitor is very current, at the most 2 minutes old.
Client reputation includes a data maintenance routine that runs every 12 hours to perform maintenance functions on the client reputation database. This routine:
Checks the number of tracked hosts. If the number is at the maximum of 5000, the maintenance routing removes the oldest ten percent (500) of hosts from the list. If the number is less than the maximum, nothing changes.
Deletes any reputation data associated with a host that is not in the tracking list (usually this only occurs if hosts are removed).
Deletes any reputation data that is older than the current time minus the window-size in days.