This is Cisco's official, comprehensive self-study resource for preparing for the newest CCNA Security certification exam. Designed for entry-level readers, it covers every objective concisely and logically, with extensive teaching features designed to promote retention and understanding. Readers will find: * Pre-chapter quizzes to assess knowledge upfront and focus study more efficiently * Foundation topics sections that explain concepts and configurations, and link theory to actual configuration commands * Key topics sections calling attention to every figure, table, and list that candidates must know * Exam Preparation sections with additional chapter review features * Final preparation chapter providing tools and a complete final study plan * Customizable practice test library on CD-ROM This second edition's many updates include new coverage of the Cisco Configuration Professional GUI tool, ASA firewall, Adaptive Security Device Manager (ASDM), IPv6 security, and more. Its comprehensive, fully-updated coverage also includes: * Network security concepts, policies, lifecycles, and strategies * Protecting network infrastructure * Securing management and data planes * Configuring AAA to use Cisco Secure ACS * Planning threat control strategies and implementing ACLs for threat mitigation * Implementing and configuring Cisco firewalls and IPS * Understanding VPNs, PKI, and IPSec * Implementing site-to-site and SSL VPNs with Cisco technologies * And much more