1. A reputation based connection throttling system for voice over internet protocol communications, the system comprising: a communications interface operable to receive voice over internet protocol connection requests associated with an external entity prior to a connection being established between the external entity and a protected network associated with the communications interface; a reputation engine operable to derive a reputation associated with the external entity; and a connection control engine operable to deny a voice over internet protocol connection request to a protected network based upon the derived reputation of the external entity associated with the voice over protocol connection request.