Product Overview
The Cisco ASA5508-K9 is a next-generation firewall appliance from the Cisco ASA 5500-X Series, designed for small to medium-sized businesses (SMBs) and branch offices. It integrates stateful firewall, VPN, advanced threat protection, and application visibility in a compact 1RU desktop form factor. The ASA5508-K9 runs Cisco ASA or FirePOWER Threat Defense (FTD) software, supporting features such as URL filtering, intrusion prevention (IPS), malware protection, and Cisco AnyConnect VPN.
Product Details
| Attribute | Description |
| Product Name | ASA5508-K9 |
| Series | Cisco ASA 5500-X Series |
| Form Factor | Desktop (1RU) |
| Firewall Throughput | Up to 500 Mbps (ASA), 300 Mbps (with NGFW features via FTD) |
| VPN Throughput | Up to 175 Mbps |
| Maximum VPN Peers | 100 |
| Interfaces | 8 x 1G RJ-45 ports (independent or switchable) |
| Software Options | Cisco ASA or FirePOWER Threat Defense (FTD) |
| Features | Stateful firewall, NAT, ACL, IPSec VPN, AnyConnect, IDS/IPS (FTD) |
| Licensing | Base license included, additional features via subscriptions |
| Ideal For | SMBs, retail locations, remote offices needing advanced threat defense |
Key Features
8 x 1G Ethernet ports, configurable individually or in switch mode
Supports Cisco ASA or FTD image, offering flexible security deployment
Stateful firewall, access control, and advanced routing
Optional URL filtering, malware protection, and intrusion prevention (IPS) with FirePOWER services
Scalable IPSec and SSL VPN support with Cisco AnyConnect
Application layer inspection and user identity integration
Cisco Threat Intelligence Director and AMP integration (with licenses)
Energy-efficient, compact appliance with fanless operation
Technical Specifications
| Specification | Value |
| Interfaces | 8 x 1G RJ-45 |
| Firewall Throughput | 500 Mbps (ASA) / 300 Mbps (FTD NGFW) |
| VPN Throughput | Up to 175 Mbps |
| Concurrent Sessions | 50,000 |
| New Connections per Sec | 4,000 |
| Max VPN Peers | 100 |
| IPsec Site-to-Site VPNs | Up to 100 |
| Management Options | CLI, ASDM, Cisco FMC (for FTD), REST APIs |
| Dimensions | 1.75 x 7.9 x 8.0 in |
| Weight | 2.5 lbs (approx.) |
| Operating Temperature | 0°C to 45°C |
Similar Models Comparison
| Model | Firewall Throughput | VPN Peers | Ports | Software Support | Use Case |
| ASA5506-K9 | 300 Mbps | 50 | 8 x 1G | ASA or FTD | Small offices |
| ASA5508-K9 | 500 Mbps | 100 | 8 x 1G | ASA or FTD | SMBs and branches |
| ASA5512-X | 1 Gbps | 250 | 6 x 1G | ASA only (no FTD) | Midsize offices |
| ASA5516-X | 1.8 Gbps | 250 | 8 x 1G | ASA or FTD | Larger branch deployments |
