Intrusion prevention systems (IPS) constantly watches your network, identifying possible incidents and logging information about them, stopping the incidents, and reporting them to security administrators. In addition, some networks use IPS for identifying problems with security policies and deterring individuals from violating security policies.AppSecure is a suite of application-aware security services for the Juniper Networks' SRX Series Services Gateways and NFX Series devices to deliver security services to provide visibility and control over the types of applications traversing in the networks. AppSecure uses a sophisticated classification engine to accurately identify applications regardless of port or protocol, including nested applications that reside within trusted network services.The content security filter blocks or allows certain type of traffic based on the mime type, file extension, protocol commands and embedded object type. The content filter controls file transfers across the gateway by checking traffic against configured filter lists. The content filtering module evaluates traffic before all other UTM modules, if traffic meets the criteria configured in the content filter, the content filter acts first upon this traffic.