I recommend not connecting a base station via the WAN (Wide Area Network) port to a broadband modem or the rest of your network until you’ve carried out more of the setup, especially the very next part.

Use AirPort Utility

AirPort Utility lets you manage base stations from a Mac, a Windows system, or an iOS device. Apple doesn’t offer Web-based configuration of its base stations. As noted in the Introduction, this book covers just AirPort Utility 6 for Mac OS X and the AirPort Utility iOS app.

Let’s look at AirPort Utility and examine its graphical approach for showing a network’s composition, and then discuss making sure your software is up to date.

Note: On the Mac, you can launch AirPort Utility from /Applications/Utilities. In iOS, first download the app from the App Store (it’s free), and then tap its icon to launch it.