Cisco CSF220-ASA-K9 - Secure Firewall 220 Appliance

Cisco Part Number: CSF220-ASA-K9 is a Cisco Secure Firewall 220 Appliance, ASA

The Cisco CSF220-ASA-K9 is a compact, high-performance security appliance from Cisco’s Secure Firewall 200 Series, designed for distributed enterprises, branch offices, and small business environments. Built with Cisco’s renowned Adaptive Security Appliance (ASA) software, this model delivers robust stateful inspection firewall capabilities in a fanless, desktop form factor — ideal for locations where space, cost, and reliability are key considerations.

Key Features

• Advanced Firewall Protection: Provides enterprise-grade stateful inspection firewall services with reliable throughput that supports demanding network traffic while safeguarding against unauthorized access and threats.
• Efficient Performance: The ASA-based software on the CSF220-ASA-K9 delivers up to 2 Gbps of stateful inspection throughput and up to 1.6 Gbps in multiprotocol configurations, ensuring efficient handling of core network traffic loads.
• Scalable Connectivity: With multiple Gigabit Ethernet ports and an SFP port for flexible uplink options, the device integrates seamlessly into existing network architectures.
• VPN Support: Supports secure IPsec VPN connectivity with consistent performance for remote site connections and secure communication between distributed networks.
• Compact and Quiet: The fanless, passive cooling design makes the unit suitable for office environments while maintaining a low noise and power footprint.

Technical Specifications

The CSF220-ASA-K9 features a compact chassis with four 1G Ethernet ports and one 1G SFP uplink, complemented by a dedicated management port. Internal storage supports configuration and system logs, and the external 30W power supply ensures energy-efficient operation. Passive cooling and multiple console interfaces — including USB Type-C and RJ-45 — support easy deployment and management. Typical stateful connections scale to 100,000 concurrent sessions, with up to 80,000 new connections per second, and up to 50 VPN peers. The appliance supports high availability in Active/Standby mode for mission-critical reliability.

Use Cases and Benefits

Ideal for small branch offices, retail locations, or remote sites, the CSF220-ASA-K9 offers enterprise-level perimeter security without complexity. Its compact design and robust performance make it suitable for environments requiring strong threat protection, secure site-to-site connectivity, and straightforward deployment. With support for centralized management via Cisco tools, organisations can enforce consistent policies and maintain visibility across distributed network environments.