Cisco ASA 5505 Adaptive Security Appliance Network Firewall (ASA5505)Cisco ASA 5505 Adaptive Security Appliance Network Firewall, Model: (ASA5505). The Cisco ASA 5505 is a full featured firewall for small business, branch, and enterprise teleworker environments. It delivers high performance firewall, SSL and IPsec VPN, and rich networking services in a modular, immediately operational appliance. Using the integrated graphical Cisco Adaptive Security Device Manager (ASDM), the Cisco ASA 5505 can be rapidly deployed and