System and method for identifying internal and external communications in a computer network

摘要

A system and method for identifying whether a communication in a computer network is directed to a destination that is internal to a company includes receiving destination information associated with a first network communication. The computer network includes a directory server, which includes a company directory that provides employee information. The directory server is accessed, and the received destination information is compared with information in the company directory. It is determined whether the first network communication is directed to a destination that is internal to the company based on the comparison of the received destination information and the information in the company directory.