OS X Mountain Lion: Check the status of your network connections
You can check the status of your network connections, such as Ethernet or Wi-Fi, using Network preferences. The information, such as the IP address and whether the network connection service is active and connected, may be useful if you are troubleshooting a connection problem.
The status indicator for each network connection service is color-coded. Green means the service is active (turned on) and connected. Yellow means it’s active but not connected. Red means the service has not been set up.
- Choose Apple menu > System Preferences, and then click Network.
- Select the network connection service in the list.
If you connect to the Internet or a network in several ways (using Wi-Fi or Ethernet, for example), you can change the order of the network services your computer tries when connecting to the Internet or a network. Choose Set Service Order from the Action pop-up menu (looks like a gear) to change the order.. When you try to connect, OS X will try the service at the top of the list first.