Description:

The Cisco ASA5550-BUN-K9 Adaptive Security Appliance is an enterprise-grade hardware firewall used in Cisco ASA security infrastructures to provide advanced network protection, VPN connectivity, and threat mitigation for high-performance networks. It includes the 4GE-SSM security services module along with 4 GB flash and 256 MB memory to support firewall inspection, VPN encryption, and network traffic management within secure enterprise environments. Commonly installed in corporate data centers, enterprise network perimeters, and high-capacity security gateways, this appliance delivers scalable security for mission-critical network infrastructures. Network security administrators, IT infrastructure teams, and system integrators use this device for deploying perimeter security, replacing legacy firewall appliances, or upgrading enterprise network protection systems.  

Applications:

The Cisco ASA5550-BUN-K9 firewall appliance is used to secure enterprise network infrastructures by providing firewall protection, VPN access, and secure traffic inspection at the network edge. It is commonly deployed in corporate data centers, large enterprise offices, and network security gateways where high-throughput firewall performance and encrypted VPN connectivity are required. Organizations implement this appliance to enforce security policies, protect internal systems from external threats, and provide secure remote access for distributed users and branch offices.

Technical Specifications:

• Brand: Cisco
• Manufacturer Part Number (MPN): ASA5550-BUN-K9
• Alternate Part Number: ASA5550BUNK9
• Product Type: Adaptive Security Appliance Firewall
• Series: Cisco ASA 5500 Series
• Included Security Module: 4GE-SSM (4 Gigabit Ethernet Security Services Module)
• Flash Memory: 4 GB
• System Memory: 256 MB
• Firewall Throughput: Up to 1.2 Gbps
• VPN Throughput: Up to 425 Mbps
• Concurrent Sessions: Up to 650,000
• VPN Peers: Up to 5,000 IPsec VPN peers
• Network Interfaces: Multiple Gigabit Ethernet interfaces with expansion module
• Security Features: Stateful firewall inspection, NAT, access control lists, intrusion prevention support
• VPN Support: IPsec VPN and SSL VPN
• Management Interface: Cisco ASDM (Adaptive Security Device Manager), CLI
• Form Factor: Rack-mountable security appliance

Common Replacements:

• Cisco ASA5525-X
• Cisco ASA5545-X
• Cisco Firepower 2110