Chapter 10 Install and System Administration for FortiOS 5.0 : Basic Administration : Connecting to the FortiGate unit : Connecting to the CLI
  
Connecting to the CLI
The command line interface (CLI) is an alternative method of configuring the FortiGate unit. The CLI compliments the web-based manager in that it not only has the same configuration options, but also contains additional settings not available through the web-based manager.
If you are new to FortiOS or a command line interface configuration tool, see “Using the CLI” for an overview of the CLI, how to connect to it, and how to use it.
See Also
Connecting to the FortiGate unit
Connecting to the web-based manager
System configuration