Server Management > Network Services > iStat Services
iStat collects data such as CPU, memory, network and disk usage and keeps the history. iStat is then able to serve statistics to your iStat iPhone/iPad application.
Turn the iStat server on or off.
Enter the pass code that is five digits for connecting this server. The pass code you enter can only contain numeric characters.
Enter the port number that the server will be used. The default port number is 5109.