The Avaya SBC provides complete network protection by blocking attacks while simultaneously passing legitimate calls through unimpeded. This exceptional level of protection can be extended to an endpoint, a specific group of endpoints, or to all assets in the network. Extending this protection is based on highly flexible user-defined rule sets called Unified Communications Policies. These policies can be implemented to precisely discriminate or normalize any incoming or outgoing signaling or multimedia traffic. Thus all IP communication devices, such as hard-phones, soft-phones, Wi-Fi phones, and smart phones are protected effectively. Call servers, voice mail servers, media servers, media gateways, and application servers are also protected, effectively securing the entire network from all types of attack.