An enterprise security system is improved by managing network flows based on an application type. When a network message having an unknown application type is received at a gateway, firewall, or other network device/service from an endpoint, the endpoint that originated the network message may be queried for identifying information for the source of the network message and the application type may be determined, or the endpoint may periodically communicate application type information to the network device in a heartbeat or other periodic communication or the like. The network message may be managed along with other network traffic according to the application type.