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Robust 5585-X with SSP20 delivers reliable firewall performance and excellent enterprise-grade throughput.
ASA5585-S20X-K9
ASA 5585-X CHASSIS WITH SSP20 8GE 2SFP+ 2GE MGMT 2 AC 3DES/A...
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ASA5585-S20X-K9
- Description:
- ASA 5585-X CHASSIS WITH SSP20 8GE 2SFP+ 2GE MGMT 2 AC 3DES/AES
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- Brand:
- Cisco
- GTIN:
- 4053162319714
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- Warranty:
- 3
- List Price:
$83,995.00
- Price:
$37,198.0055.7% off
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ASA5585-S20X-K9 Overview
ASA5585-S20X-K9 is a high-performance rack-mounted security appliance engineered for enterprise, data center, branch, and cloud deployments. It delivers robust firewall protection with a 20 Gbps throughput capacity and features versatile port configurations including LAN, WAN, and SFP interfaces, all powered by redundant AC power supply options.
ASA5585-S20X-K9 is designed to support advanced security services such as IPS, antivirus, web filtering, and VPN functionalities, offering integrated management via CLI, GUI, and SNMP for streamlined deployment and centralized reporting. With scalability, active-passive high availability, and clustering support, this device meets the demands of modern, security-driven network infrastructures.
ASA5585-S20X-K9 price is $37,198.00, a 55.7% saving from the Cisco list price of $83,995.00. ASA5585-S20X-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for ASA5585-S20X-K9 for additional pricing. Browse the full Cisco Asa 5500 Series series or explore all Cisco products.
ASA5585-S20X-K9 Specifications
- Product Type
- Firewall Appliance
- Architecture
- Rack-mount
- Deployment Type
- Enterprise / Data Center / Branch / Cloud
- Use Case
- VPN / Secure Access / UTM
- Firewall Layer Supported
- Layer 3 / Layer 4 / Layer 7
- Power Source
- AC Power Supply
- Redundant Power Supply Supported
- Yes
- Firewall Throughput
- 20 Gbps
- Threat Protection Throughput
- 9 Gbps
- IPS Throughput
- 4 Gbps
- VPN Throughput
- 12 Gbps
- Supported Applications
- N/A
- Centralized Configuration & Reporting
- Cisco ASA Management Center
- Feature
- Integrated Security Services
- Concurrent Sessions
- 1000000
- Maximum Concurrent Sessions
- 1000000
- Users/Nodes
- Unlimited
- Integrated I/O
- N/A
- New Sessions Per Second
- 50000
- Supported VPN Types
- IPSec / SSL VPN
- Routing Protocols Supported
- OSPF / BGP / RIP / Static Routing
- Security Services
- Antivirus / Web Filtering / Application Control / IPS / VPN
- High Availability
- Active-Passive
- Interfaces
- RJ-45 / SFP
- WAN Ports
- 2 WAN
- LAN Ports
- 4 LAN Ports
- Switch Ports
- No
- POE Ports
- No
- Management Options
- CLI / GUI / SNMP
- Logging & Monitoring
- Built-in / Syslog
- Firewall Policies Supported
- N/A
- Users Supported
- N/A
- Memory
- 16 GB
- Flash Storage
- 128 GB SSD
- Expansion Slots
- SFP
- Form Factor
- Rack-mount
- Rack Units
- 2 RU
- Device Type
- NGFW
- Product Name
- Cisco ASA 5585-X S20X-K9 Security Appliance
- Height
- 3.44 inches
- Width
- 17.2 inches
- Depth
- 30 inches
- Weight
- 50 lbs
ASA5585-S20X-K9 Use Case
Enterprise Data Center Perimeter Security & High Availability
A Fortune 500 data center handling 35 Gbps of web, database and application traffic deploys the ASA5585-S20X-K9-ASA 5585-X chassis with SSP20 to deliver 20 Gbps of hardware-accelerated stateful firewall and IPS inspection. With 8×1GE, 2×SFP+ interfaces, dual AC power and built-in 3DES/AES encryption, it achieves 99.999% uptime and sub-millisecond failover. Benefit: uninterrupted perimeter defense, consistent low-latency performance and full compliance with enterprise security mandates.
Secure Multi-Site Data Center Interconnect with Hardware-Accelerated Encryption
A global retailer connects five geographically dispersed data centers over IPsec, consolidating traffic through the ASA5585-S20X-K9-ASA 5585-X chassis with SSP20 as a high-performance VPN concentrator. Leveraging 2 Gbps of dedicated encrypted throughput, 8 Gigabit and 2 SFP+ ports plus 3DES/AES offload, it delivers sub-30 ms replication latency and FIPS-compliant encryption. Benefit: centralized policy management, secure data replication and reduced operational complexity.
Scalable SSL VPN Concentration for Global Remote Access
A multinational financial services firm supports 2,000 simultaneous SSL VPN users on the ASA5585-S20X-K9-ASA 5585-X chassis with SSP20, delivering 1.5 Gbps of encrypted remote‐access throughput. Dual management ports, redundant AC power and hardware-accelerated AES ensure 24×7 connectivity and 40% higher VPN performance than software-only solutions. Benefit: resilient, high-speed remote access, improved end-user experience and stringent regulatory compliance.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| ASA5585-S20X-K9 |  ASA5506-SEC-BUN-K9 |  ASA5545-CU-2AC-K9 |  ASA5580-40-10GE-K9 |  ASA5550-BUN-K9 | |
|---|---|---|---|---|---|
| Architecture | Rack-mount | Desktop | Rack-mount | Rack-mount | Rack-mount |
| Centralized Configuration & Reporting | Cisco ASA Management Center | Centralized | Cisco ASDM & Cisco Security Manager | Cisco ASDM / Cisco Security Manager | Cisco ASDM, SNMP, syslog |
| Concurrent Sessions | 1000000 | 25000 | 150,000 | 100000 | 650,000 |
| Deployment Type | Enterprise / Data Center / Branch / Cloud | Small Business / Branch Office | Enterprise / Branch Office | Enterprise / Data Center | Enterprise / Branch Office |
| Depth | 30 inches | 15.7 inches | 19 inches | 18 inches | 20.9 inches |
| Device Type | NGFW | NGFW | NGFW | NGFW | NGFW |
| Expansion Slots | SFP | N/A | SFP | N/A | SFP |
| Feature | Integrated Security Services | Next-Generation Firewall features | Advanced Malware Protection | Advanced threat protection, VPN, IPS, antivirus, web filtering, high availability clustering | High Performance Security Services |
| Firewall Layer Supported | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 4 | Layer 3, Layer 4, Layer 7 | Layer 3 | Layer 3 / Layer 4 / Layer 7 |
| Firewall Policies Supported | N/A | N/A | 5000 | N/A | N/A |
| Firewall Throughput | 20 Gbps | 300 Mbps | 3.2 Gbps | 10 Gbps | 750 Mbps |
| Flash Storage | 128 GB SSD | 8 GB | 64 GB | 128 GB | 16 GB |
| Form Factor | Rack-mount | Desktop | 1 RU | 2 RU | 1 RU |
| Height | 3.44 inches | 1.8 inches | 1.75 inches | 3.5 inches | 4.3 inches |
| High Availability | Active-Passive | Active-Passive | Active-Passive | Active-Passive | Active-Passive |
| IPS Throughput | 4 Gbps | 150 Mbps | 1.25 Gbps | 8 Gbps | 300 Mbps |
| Integrated I/O | N/A | 8 | N/A | 40 | 8 |
| Interfaces | RJ-45 / SFP | RJ-45 | RJ-45, SFP | SFP+ | RJ-45 / SFP |
| LAN Ports | 4 LAN Ports | 8 LAN Ports | 8 LAN Ports | 40 LAN Ports | 4 LAN Ports |
| Logging & Monitoring | Built-in / Syslog | Built-in / Syslog | Built-in, Syslog, Cloud Logging | Built-in / Syslog | Built-in / Syslog |
| Management Options | CLI / GUI / SNMP | CLI / GUI / SNMP | CLI, GUI, Centralized, REST API, SNMP | CLI / GUI / SNMP | CLI / GUI / SNMP |
| Maximum Concurrent Sessions | 1000000 | 50000 | 300,000 | 100000 | 650,000 |
| Memory | 16 GB | 4 GB | 8 GB | 16 GB | 4 GB |
| New Sessions Per Second | 50000 | 3000 | 30,000 | 20000 | 100,000 |
| POE Ports | No | No | No | No | No |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Cisco ASA 5585-X S20X-K9 Security Appliance | Cisco ASA5506-SEC-BUN-K9 | Cisco ASA5545-CU-2AC-K9 | ASA5580-40-10GE-K9 | ASA5550-BUN-K9 |
| Product Type | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance |
| Rack Units | 2 RU | N/A | 1 RU | 2 RU | 1 RU |
| Redundant Power Supply Supported | Yes | No | Yes | Yes | Yes |
| Routing Protocols Supported | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF, BGP, RIP, Static Routing | Static Routing | OSPF / BGP / RIP / Static Routing |
| Security Services | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / IPS / VPN | Antivirus, Web Filtering, Application Control, IPS, VPN | Antivirus / Web Filtering / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN |
| Supported Applications | N/A | N/A | N/A | 8 | N/A |
| Supported VPN Types | IPSec / SSL VPN | IPSec / SSL VPN | IPSec, SSL VPN, L2TP | IPSec / SSL VPN | IPSec / SSL VPN |
| Switch Ports | No | Yes | Yes | No | No |
| Threat Protection Throughput | 9 Gbps | 150 Mbps | N/A | 8 Gbps | 450 Mbps |
| Use Case | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / IPS / UTM | VPN / Secure Access / UTM |
| Users Supported | N/A | N/A | 10,000 | N/A | N/A |
| Users/Nodes | Unlimited | 250 | Unlimited | Unlimited | N/A |
| VPN Throughput | 12 Gbps | 100 Mbps | 1.2 Gbps | 6 Gbps | 450 Mbps |
| WAN Ports | 2 WAN | N/A | 2 WAN | N/A | 2 WAN |
| Weight | 50 lbs | 16 lbs | 25 lbs | 30 lbs | 39 lbs |
| Width | 17.2 inches | 17.7 inches | 17 inches | 17.3 inches | 17.1 inches |
Reviews & Ratings
B
Beatrice Quinn
5
Easy deployment with minimal downtime and stable network operations.
C
Caleb Rivers
5
Handles high-traffic environments efficiently with consistent reliability.
D
Danielle Shaw
4
Professional-grade security appliance for critical enterprise networks.
E
Ethan Frost
5
Durable and dependable under heavy workloads.
Questions & Answers
What is the Cisco ASA5585-S20X-K9 chassis with SSP20?
The ASA 5585-X chassis with SSP20 is a high-throughput security appliance that integrates a specialized service module (SSP20) for advanced firewall, VPN, and intrusion prevention in enterprise networks.
How many network interfaces does the ASA5585-S20X-K9 offer?
It offers 8 fixed Gigabit Ethernet ports, 2 SFP+ interfaces for 10Gbps uplinks, and 2 dedicated Gigabit Ethernet management ports.
What power supplies are included with the ASA5585-S20X-K9?
The unit includes dual AC redundant power supplies for high availability and continuous operation.
Which encryption standards does the ASA5585-S20X-K9 support?
It supports 3DES and AES encryption, including AES-128 and AES-256, for secure VPN tunnels.
What throughput performance can I expect from the SSP20 module?
The SSP20 module delivers up to 20 Gbps of firewall throughput and 3 Gbps of IPsec VPN performance under ideal conditions.
Does the ASA5585-X support software updates and feature licenses?
Yes, it supports Cisco ASA Software, and you can add licenses for features like AnyConnect VPN, FirePOWER services, and advanced malware protection.
Can I deploy the ASA5585-S20X-K9 in high availability mode?
Yes, it supports active/standby high availability for seamless failover and continuous security services.
What are the physical dimensions and rack requirements?
The chassis is 1U high, requires a standard 19-inch rack, and measures 17.5" x 15.9" x 1.75" (W x D x H).
How is the ASA5585-S20X-K9 managed?
You can manage it via CLI over SSH, ASDM GUI, or centrally with Cisco Security Manager and Cisco Defense Orchestrator.
What security features are integrated in the ASA5585-X platform?
It integrates stateful packet inspection, intrusion prevention, firewall services, VPN, and optional FirePOWER threat defense modules.
Which environments is the ASA5585-S20X-K9 best suited for?
It is ideal for medium to large enterprise and data center deployments requiring high throughput and advanced security.
Is the ASA5585-S20X-K9 backward compatible with older ASA modules?
No, the SSP20 module is specific to the ASA 5585-X chassis and is not compatible with earlier ASA appliance series.
What warranty and support options are available?
Cisco offers a limited lifetime warranty for the chassis and one-year SMARTnet support, with options to extend support and add 24/7 coverage.
Can I upgrade the service module on the ASA5585-X?
Yes, you can field-upgrade to higher-capacity SSP modules in the ASA 5585-X chassis to scale performance.
Does the ASA5585-S20X-K9 support virtual contexts?
Yes, it supports up to 20 virtual firewall contexts, allowing segmentation into multiple independent security domains.
What are the recommended ambient operating conditions?
Operational temperature range is 32° to 104°F (0° to 40°C) with humidity between 5% and 90% non-condensing.