Symantec Endpoint Protection
client status icons

You can check the notification area icon on the client to determine whether the client is connected to a management server and adequately protected. The notification area icon is sometimes referred to as the system tray icon.
The icon is located in the lower-right hand corner of the client computer desktop. You can also right-click this icon to display frequently used commands.
Client status icons
The client runs with no problems. It is either offline or unmanaged. Unmanaged clients are not connected to a management server.
The client runs with no problems. It is connected to and communicates with the server. All components of the security policy protect the computer.
The client has a minor problem. For example, the virus definitions may be out of date.
The client does not run, has a major problem, has an expired license, or has at least one protection technology disabled.