FreenetSettings
When starting Freenet for the first time, the node writes a default configuration file named freenet.ini. You most likely will want to change certain things, like the node-name and the ports on which the node listens for connections.
Changing Settings
The easiest way to change the configuration settings is by using Fproxy. Configuration Page
You can also change configuration settings by manually editing the freenet.ini file. Note: While some settings can be read "on-the-fly" by Freenet, it is best to stop the node if you want to make any changes manually.