The Cisco^® Firewall Services Module (FWSM) for Cisco Catalyst^® 6500 Series switches and Cisco 7600 Series routers is a high-performance, integrated stateful inspection firewall with application and protocol inspection engines. It provides upto 5.5 Gbps of throughput, 100,000 new connections per second, one million concurrent connections or 256,000 NAT translations and upto 80,000 Access Control List Entries. Up to four FWSMs can be installed in a single chassis, providing scalability up to 20 Gbps per chassis. As an extension to the Cisco PIX^®/ASA family of security appliances, the FWSM provides large enterprises and service providers with superior security, performance, and reliability.Based on Cisco PIX/ASA firewall technology, the FWSM is a hardened, embedded system that eliminates security holes and performance-degrading overhead. The Cisco FWSM tracks the state of all network communications and prevents unauthorized network access. It delivers strong application-layer security through intelligent, application-aware inspection engines that examine network flows at Layers 4-7, including market-leading protection for voice over IP (VoIP), multimedia, instant messaging, and peer-to-peer applications.