Can I deploy the ASA 5585-X in a high-availability configuration?

Yes. The ASA 5585-X supports active/standby high-availability pairs with stateful failover to maintain continuous network protection.

What power supply options come with ASA5585-S20-K9?

The chassis ships with one AC power supply and supports an optional second AC unit for full power redundancy.

Which license tiers are available for the ASA 5585-X SSP20?

Two tiers: Base (full firewall, IPS, VPN) and Security Plus (additional contexts, VPN sessions, and advanced threat features).

How many security contexts does the ASA 5585-X support on SSP20?

Under Base licensing it supports up to 250 security contexts; Security Plus increases that limit to 500 contexts.

What rack space does the ASA 5585-X chassis occupy?

The ASA 5585-X is a 2U rack-mountable chassis, designed for standard 19-inch server racks.

Is the ASA5585-S20-K9 compatible with Cisco Firepower services?

No. SSP20 supports ASA OS only. To deploy Firepower services, upgrade to SSP40 or higher with Firepower modules.

Can I upgrade the SSP20 module to a higher-performance module?

Yes. The chassis supports hot-swappable SSP modules such as SSP40, SSP60, and SSP80 to scale throughput and sessions.

Does the ASA 5585-X support IPv6?

Yes. It fully supports IPv6 routing, NAT, firewall policies, and VPN to address modern network requirements.

How do I monitor performance and security events on the ASA 5585-X?

Use Cisco ASDM, CLI commands or SNMP for real-time monitoring. You can also integrate with Cisco Prime or Security Manager.

What are the operating temperature and airflow requirements?

The chassis operates between 0 °C and 40 °C with front-to-back airflow. Humidity must remain 10–90% non-condensing.

What warranty and support options are available?

Cisco provides a one-year limited hardware warranty. SMARTnet support contracts are available for software updates and 24/7 assistance.

Which compliance certifications does the ASA 5585-X meet?

It holds Common Criteria EAL4+, FIPS 140-2 Level 2, UL, CE, FCC, and various global security and safety certifications.

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ASA5585-S20-K9

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ASA5585-S20-K9 Overview

ASA5585-S20-K9 is a rack-mounted hardware appliance with a chassis architecture delivering a firewall throughput of 20 Gbps, configured with multiple LAN and WAN interfaces (including SFP ports) to support robust network segmentation and high-speed connectivity. It features an AC power supply with redundant support and is equipped to deliver integrated security services such as IPS, antivirus, web filtering, and VPN.

Designed for enterprise, branch office, and cloud deployments, ASA5585-S20-K9 offers comprehensive management options via CLI, GUI, SNMP, and REST API along with centralized configuration and logging. Its scalable design embraces high availability with active-passive clustering, making it well suited for demanding use cases in secure access, next-generation firewall protection, and unified threat management scenarios.

ASA5585-S20-K9 price is $35,170.00, a 51.1% saving from the Cisco list price of $71,995.00. ASA5585-S20-K9 is in stock and available for next-day dispatch. (terms applied)

Request bulk order quote for ASA5585-S20-K9 for additional pricing. Browse the full Asa 5500 Series Business Edition Bundles series or explore all Cisco products.

ASA5585-S20-K9 Specifications

Product Type: Firewall Appliance
Architecture: Chassis
Deployment Type: Enterprise / Data Center / Branch Office
Use Case: NGFW / UTM / VPN
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: 10 Gbps
IPS Throughput: 6 Gbps
VPN Throughput: 10 Gbps
Supported Applications: N/A
Centralized Configuration & Reporting: Cisco Defense Orchestrator
Feature: Next-Generation Firewall, IPS, Advanced Malware Protection
Concurrent Sessions: 2 Million
Maximum Concurrent Sessions: 2 Million
Users/Nodes: Unlimited
Integrated I/O: N/A
New Sessions Per Second: 50,000
Supported VPN Types: IPSec / SSL VPN
Routing Protocols Supported: OSPF / BGP / RIP / Static Routing
Security Services: IPS / Antivirus / Web Filtering / VPN
High Availability: Active-Passive
Interfaces: RJ-45 / SFP
WAN Ports: 2 WAN
LAN Ports: 8 LAN Ports
Switch Ports: No
POE Ports: No
Management Options: CLI / GUI / SNMP / REST API
Logging & Monitoring: Built-in / Syslog
Firewall Policies Supported: N/A
Users Supported: N/A
Memory: 16 GB
Flash Storage: 32 GB
Expansion Slots: SFP
Form Factor: Chassis
Rack Units: 2 RU
Device Type: NGFW
Product Name: Cisco ASA5585-S20-K9
Height: N/A
Width: N/A
Depth: N/A
Weight: N/A

ASA5585-S20-K9 Use Case

Data Center Perimeter Security & PCI Compliance

In a high-volume e-commerce data center, deploy the Cisco ASA5585-S20-K9-ASA 5585-X Chassis with SSP20, 8GE, 2 SFP, 2 Mgt, 1 AC, 3DES/AES as the primary perimeter firewall to inspect up to 20 Gbps of East-West and North-South traffic. Enforce PCI DSS 3.2 controls by segmenting DMZ, internal subnets and payment zones, while leveraging hardware-accelerated AES encryption for secure transactions. Benefit: meets audit requirements, minimizes breach risk and maintains sub-millisecond latency under peak loads.

Global Branch Office Secure VPN Hub

A multinational retail chain uses the Cisco ASA5585-S20-K9-ASA 5585-X Chassis with SSP20 as its central VPN concentrator, supporting over 2,000 IPsec tunnels. Eight Gigabit Ethernet and two SFP ports provide redundant WAN paths; dual management interfaces enable out-of-band administration. Hardware-accelerated 3DES/AES ensures high-speed encrypted connectivity for 500+ branches. Outcome: 99.99% uptime, streamlined policy management and consistent, low-latency user experience across all locations.

MSP Multi-Tenant Edge Security Platform

Managed Security Service Providers deploy the Cisco ASA5585-S20-K9-ASA 5585-X Chassis with SSP20, 8GE, 2 SFP, 2 Mgt, 1 AC, 3DES/AES to host dozens of virtual firewall contexts. Each context isolates tenant traffic at hardware speeds up to 20 Gbps and enforces custom policies. Flexible port density and industry-standard encryption accelerate customer onboarding from weeks to hours. Impact: new revenue streams, higher ARPU and reduced operational costs through consolidated hardware and centralized management.

Quality Certifications

To get the detailed certification, please go to the Compliance Center.

Product Comparison Table

	ASA5585-S20-K9	ASA5585-S20-K7	ASA5555-CU-2AC-K9	ASA5585-S40-K8	ASA5555-K9
Architecture	Chassis	Rack-mount	Rack-mount	Rack-mount	Rack-mount
Centralized Configuration & Reporting	Cisco Defense Orchestrator	Yes	Yes	Yes	Cisco Adaptive Security Device Manager
Concurrent Sessions	2 Million	2 Million	500000	2000000	500000
Deployment Type	Enterprise / Data Center / Branch Office	Enterprise / Data Center / Branch Office	Enterprise / Branch Office	Enterprise / Branch Office	Enterprise / Branch Office
Depth	N/A	17 inches	18.5 inches	15 inches	18 inches
Device Type	NGFW	NGFW	NGFW	NGFW	NGFW
Expansion Slots	SFP	SFP	SFP	SFP	SFP
Feature	Next-Generation Firewall, IPS, Advanced Malware Protection	Comprehensive threat intelligence integration	High Performance, Scalable, and Clustering Options	High Availability, Scalability	High Availability
Firewall Layer Supported	Layer 3 / Layer 4 / Layer 7	Layer 3 / Layer 7	Layer 3 / Layer 4 / Layer 7	Layer 7	Layer 3 / Layer 4 / Layer 7
Firewall Policies Supported	N/A	500	200	500	1000
Firewall Throughput	20 Gbps	20 Gbps	5 Gbps	40 Gbps	7 Gbps
Flash Storage	32 GB	128 GB	128 GB	128 GB	128 GB
Form Factor	Chassis	2 RU	1 RU	1 RU	Rack-mount
Height	N/A	3.5 inches	1.8 inches	1.75 inches	3.5 inches
High Availability	Active-Passive	Active-Passive	Active-Passive	Active-Passive	Active-Passive
IPS Throughput	6 Gbps	10 Gbps	2 Gbps	8 Gbps	2 Gbps
Integrated I/O	N/A	4	8	8	4
Interfaces	RJ-45 / SFP	RJ-45 / SFP	RJ-45 / SFP	RJ-45 / SFP	RJ-45 / SFP
LAN Ports	8 LAN Ports	8 LAN Ports	8 LAN Ports	8 LAN Ports	8 LAN Ports
Logging & Monitoring	Built-in / Syslog	Built-in / Syslog / Cloud Logging	Built-in	Built-in / Syslog / Cloud Logging	Built-in / Syslog
Management Options	CLI / GUI / SNMP / REST API	Cloud / CLI / GUI / SNMP	Cloud / CLI / GUI / Centralized / REST API / SNMP	Cloud / CLI / GUI / Centralized / REST API / SNMP	CLI / GUI / SNMP
Maximum Concurrent Sessions	2 Million	2.5 Million	1000000	2000000	1000000
Memory	16 GB	16 GB	8 GB	16 GB	8 GB
New Sessions Per Second	50,000	50,000	20000	50000	50000
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 ASA5585-S20-K9	ASA5585-S20-K7	ASA5555-CU-2AC-K9	ASA5585-S40-K8	Cisco ASA5555-K9 Adaptive Security Appliance
Product Type	Firewall Appliance	Firewall Appliance	Firewall Appliance	Firewall Appliance	Firewall Appliance
Rack Units	2 RU	2 RU	1 RU	1 RU	2 RU
Redundant Power Supply Supported	Yes	Yes	Yes	Yes	Yes
Routing Protocols Supported	OSPF / BGP / RIP / Static Routing	OSPF / BGP / Static Routing	OSPF / BGP / RIP / Static Routing	OSPF / BGP / Static Routing	OSPF / BGP / RIP / Static Routing
Security Services	IPS / Antivirus / Web Filtering / VPN	Antivirus / Web Filtering / Application Control / IPS / VPN	Antivirus / Web Filtering / Application Control / IPS / VPN	Antivirus / Web Filtering / Application Control / IPS / VPN	Antivirus / Web Filtering / Application Control / IPS / VPN
Supported Applications	N/A	500	250	50	50
Supported VPN Types	IPSec / SSL VPN	IPSec / SSL VPN	IPSec / SSL VPN / L2TP	IPSec / SSL VPN	IPSec / SSL VPN
Switch Ports	No	Yes	Yes	Yes	Yes
Threat Protection Throughput	10 Gbps	15 Gbps	3 Gbps	20 Gbps	3 Gbps
Use Case	NGFW / UTM / VPN	VPN / Secure Access / UTM	VPN / Secure Access / UTM	VPN / Secure Access / UTM	VPN / Secure Access / UTM
Users Supported	N/A	Unlimited	Unlimited	Unlimited	Unlimited
Users/Nodes	Unlimited	Unlimited	Unlimited	Unlimited	Unlimited
VPN Throughput	10 Gbps	5 Gbps	1.5 Gbps	10 Gbps	1.5 Gbps
WAN Ports	2 WAN	2 WAN	2 WAN	2 WAN	2 WAN
Weight	N/A	35 lbs	20 lbs	25 lbs	40 lbs
Width	N/A	17 inches	17.3 inches	17.5 inches	17 inches

Reviews & Ratings

Olive Carter

Reliable SSP20 5585-X chassis for enterprise networks, delivering professional-grade security.

Parker Blake

Quick installation with stable performance.

Quinn Foster

Handles medium to high traffic reliably.

Rory Lane

Professional-grade firewall with minimal maintenance required.

Sienna Hayes

Durable and dependable for continuous network protection.

Questions & Answers

What is the firewall throughput of the Cisco ASA 5585-X with SSP20?

The ASA 5585-X with SSP20 delivers up to 20 Gbps of firewall throughput, enabling high-performance, low-latency traffic inspection.

How many IPsec VPN tunnels can the ASA 5585-X SSP20 support?

The SSP20 module supports up to 10 000 concurrent IPsec VPN tunnels for secure site-to-site and remote-access connectivity.

Which network interfaces are included on the ASA5585-S20-K9 chassis?

It includes eight 10/100/1000 Ethernet ports, two SFP fiber ports, and two dedicated Gigabit Ethernet management interfaces.

Does the ASA 5585-X support hardware-accelerated 3DES and AES encryption?

Yes. The SSP20 module provides hardware acceleration for 3DES and AES, ensuring efficient VPN and data-in-transit encryption.

Related Searches Asa 5500 Series Business Edition Bundles

ASA5585-S10X-K9 ASA5585-S60-2D-K9 ASA5585-S40-2D-K9 ASA5585-S20-K7 ASA5585-S10-K9 ASA5585-S60-2A-K7 ASA5585-S20X-K9 ASA5585-S60-2A-K9

ASA5585-S20-K9 Overview

ASA5585-S20-K9 price is $35,170.00, a 51.1% saving from the Cisco list price of $71,995.00. ASA5585-S20-K9 is in stock and available for next-day dispatch. (terms applied)

ASA5585-S20-K9 Specifications

Product Type

Firewall Appliance

Architecture

Chassis

Deployment Type

Enterprise / Data Center / Branch Office

Use Case

NGFW / UTM / VPN

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

10 Gbps

IPS Throughput

6 Gbps

VPN Throughput

10 Gbps

Supported Applications

N/A

Centralized Configuration & Reporting

Cisco Defense Orchestrator

Feature

Next-Generation Firewall, IPS, Advanced Malware Protection

Concurrent Sessions

2 Million

Maximum Concurrent Sessions

2 Million

Users/Nodes

Unlimited

Integrated I/O

N/A

New Sessions Per Second

50,000

Supported VPN Types

IPSec / SSL VPN

Routing Protocols Supported

OSPF / BGP / RIP / Static Routing

Security Services

IPS / Antivirus / Web Filtering / VPN

High Availability

Active-Passive

Interfaces

RJ-45 / SFP

WAN Ports

2 WAN

LAN Ports

8 LAN Ports

Switch Ports

POE Ports

Management Options

CLI / GUI / SNMP / REST API

Logging & Monitoring

Built-in / Syslog

Firewall Policies Supported

N/A

Users Supported

N/A

Memory

16 GB

Flash Storage

32 GB

Expansion Slots

SFP

Form Factor

Chassis

Rack Units

2 RU

Device Type

NGFW

Product Name

Cisco ASA5585-S20-K9

Height

N/A

Width

N/A

Depth

N/A

Weight

N/A