Cisco Self-Defending Network: This topic describes the Cisco Self-Defending Network strategy. The Cisco Self-Defending Network strategy describes the Cisco vision for security systems, and helps customers more effectively manage and mitigate risks posed to their networked business systems and applications. Cisco Self-Defending Network is the Cisco response to the increasing challenge of new threats and vulnerabilities that result from constantly evolving technologies and system developments. It provides a comprehensive approach to secure enterprise networks. The Cisco Self-Defending Network strategy consists of three systems, or pillars, each with a specific purpose. By using Cisco integrated security solutions, customers can leverage their existing infrastructure to address potential threats to their network. While security risks are inherent in any network, customers can reduce their exposure and minimize these risks by deploying three categories of overlapping and complementary security solutions: „ Secure connectivity: Provides secure and scalable network connectivity, incorporating multiple types of traffic. „ Threat defense: Prevents and responds to network attacks and threats using network services. „ Trust and identity: Allows the network to intelligently protect endpoints using technologies such as authentication, authorization, and accounting (AAA), Cisco Secure Access Control Server (ACS), Network Admission Control (NAC), identity services, and 802.1x. The Cisco Self-Defending Network is based on a foundation of security integrated throughout the network, with constant innovations in products and technologies and crafted into systemlevel solutions. Such solutions incorporate all aspects of the network as well as the sophisticated services needed to make it work. In addition, Cisco is working with major industry partners to ensure the completeness of the strategy.