Use this information if the PerformanceGuard agent on a computer won't connect to the PerformanceGuard system even though the computer is otherwise online. You can only do this if you're a PerformanceGuard administrator. When that's the case, the computer never appears when you search for it in the PerformanceGuard web interface (ANALYZE > Computers > Computer Search). Alternatively, it does appear, but with a yellow or red status.
When everything works correctly, the agent should connect to the PerformanceGuard Frontend server. The Frontend server in turn sends the agent's data to the PerformanceGuard Backend server, which in turn lets you view the data in the PerformanceGuard web interface, in reports, and through e-mail notifications.