Check the status of your network
You can check the status of your network connection, such as Ethernet or Wi-Fi, using Network preferences. The information you see here may be useful if you are troubleshooting a connection problem.
Choose Apple menu > System Preferences, then click Network.
Select the network connection you want to check in the list at the left.
A status indicator next to the connection shows its status: 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.
See alsoCheck your network connection