iStat’s servers list is the home page of the app. It’s where you’ll find a list of all Bonjour servers, TCP/IP servers you’ve added yourself and a “My iPhone” item that takes you to your iPhone stats. It’s also where you’ll find the buttons to take you to ping and traceroute.
Bonjour is a zero configuration networking protocol (please read this wikipedia entry for more information on Bonjour). This means that if you have iStat Server running on the same local network as your iPhone, it will appear in the Bonjour Servers list, allowing you to connect without setting anything up. If no Bonjour servers can be found, then the Bonjour servers section will be hidden.
The remote servers section lists all the TCP/IP servers you’ve added (please read this wikipedia entry for more information on TCP/IP). If no TCP/IP servers have been added, then the Remote servers section will be hidden.
To add a new TCP/IP server, tap +, then enter either a hostname (ie. mysite.com) or the IP address of your server (it’ll be something like 220.127.116.11).
The port number must match the port number set in iStat Server. The default port number in iStat Server is 5109, so if you haven’t changed it, then that’s what it’ll be.
Please note that iStat Server must be running on the server you’d like to connect to. This also means the server must be running OS X Client 10.4 or higher, or OS X Server 10.4 or higher. iStat does not currently support Windows servers.
Tap Test to check you’ve entered a hostname or IP address that connects to a server.
When connecting to a server, a passcode is required. The passcode is displayed in the iStat Server main window. Once you’ve entered the passcode, iStat will remember it so you don’t need to type it in every time you connect.
The passcode can be changed and the authorization can be reset from iStat Server, which will force iStat to ask for the new passcode when connecting next.