United States$5,000,000+
Inventory Delivered By
A
Avery Dalton
5
ASA 5555-X delivers robust security and high throughput, perfect for mid-sized enterprise networks.
ASA5555-K9
Original Stock
Ready to Ship
ASA 5555-X with SW, 8GE Data, 1GE Mgmt, AC, 3DES/AES
FEATURED DEAL
Name:
ASA5555-K9
- Description:
- ASA 5555-X with SW, 8GE Data, 1GE Mgmt, AC, 3DES/AES
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 662964469233
- Condition:
- Warranty:
- 3
- List Price:
$24,995.00
- Price:
$7,462.0070.1% off
Quantity:
1
Business price:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
TRUSTED, TRIED, PROVEN
Officially Accredited
& Verified By
Next-Gen IT
Solutions Powered By
ASA5555-K9 Overview
ASA5555-K9 is a high-performance, rack-mounted firewall appliance engineered for enterprise and branch office deployments. It provides a robust security foundation with multiple high-speed LAN, WAN, and SFP ports, coupled with built-in support for advanced security services such as IPS, antivirus, web filtering, and VPN.
Designed to meet the demands of both SMB and large enterprise environments, ASA5555-K9 delivers exceptional throughput and reliable performance with redundant AC power supplies. Its versatile management options—offering CLI, GUI, SNMP, and centralized configuration and reporting—along with support for high availability and clustering, make it ideally suited for scalable, mission-critical network security deployments.
ASA5555-K9 price is $7,462.00, a 70.1% saving from the Cisco list price of $24,995.00. ASA5555-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for ASA5555-K9 for additional pricing. Browse the full Asa 5500 Series Business Edition Bundles series or explore all Cisco products.
ASA5555-K9 Specifications
- Product Type
- Firewall Appliance
- Architecture
- Rack-mount
- Deployment Type
- Enterprise / Branch Office
- 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
- 7 Gbps
- Threat Protection Throughput
- 3 Gbps
- IPS Throughput
- 2 Gbps
- VPN Throughput
- 1.5 Gbps
- Supported Applications
- 50
- Centralized Configuration & Reporting
- Cisco Adaptive Security Device Manager
- Feature
- High Availability
- Concurrent Sessions
- 500000
- Maximum Concurrent Sessions
- 1000000
- Users/Nodes
- Unlimited
- Integrated I/O
- 4
- 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
- 8 LAN Ports
- Switch Ports
- Yes
- POE Ports
- No
- Management Options
- CLI / GUI / SNMP
- Logging & Monitoring
- Built-in / Syslog
- Firewall Policies Supported
- 1000
- Users Supported
- Unlimited
- Memory
- 8 GB
- Flash Storage
- 128 GB
- Expansion Slots
- SFP
- Form Factor
- Rack-mount
- Rack Units
- 2 RU
- Device Type
- NGFW
- Product Name
- Cisco ASA5555-K9 Adaptive Security Appliance
- Height
- 3.5 inches
- Width
- 17 inches
- Depth
- 18 inches
- Weight
- 40 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| ASA5555-K9 |  ASA5585-S20-K7 |  ASA5525-DC-K8 |  ASA5585-S60-2A-K8 |  ASA5585-S40-2D-K9 | |
|---|---|---|---|---|---|
| Architecture | Rack-mount | Rack-mount | Rack-mount | Chassis | Rack-mount |
| Centralized Configuration & Reporting | Cisco Adaptive Security Device Manager | Yes | Cisco Security Manager | Cloud / CLI / GUI / REST API / SNMP | Yes |
| Concurrent Sessions | 500000 | 2 Million | 100,000 | N/A | 1,000,000 |
| Deployment Type | Enterprise / Branch Office | Enterprise / Data Center / Branch Office | Enterprise / Data Center / Branch Office | Enterprise / Data Center | Enterprise / Data Center / Branch Office |
| Depth | 18 inches | 17 inches | 18.5 inches | N/A | 18.7 inches |
| Device Type | NGFW | NGFW | NGFW | NGFW | NGFW |
| Expansion Slots | SFP | SFP | SFP | SFP | SFP |
| Feature | High Availability | Comprehensive threat intelligence integration | High Availability, Clustering, Advanced Threat Protection | High availability, clustering | Next-Generation Firewall with Integrated IPS, Antivirus, Web Filtering, and VPN |
| Firewall Layer Supported | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 7 | Layer 3, Layer 4, Layer 7 | Layer 3 / Layer 4 / Layer 7 | Layer 3 / Layer 4 / Layer 7 |
| Firewall Policies Supported | 1000 | 500 | N/A | N/A | N/A |
| Firewall Throughput | 7 Gbps | 20 Gbps | 2.5 Gbps | 60 Gbps | 40 Gbps |
| Flash Storage | 128 GB | 128 GB | 128 GB | 128 GB SSD | 64 GB |
| Form Factor | Rack-mount | 2 RU | 1 RU | Chassis | 1 RU |
| Height | 3.5 inches | 3.5 inches | 1.75 inches | N/A | 1.75 inches |
| High Availability | Active-Passive | Active-Passive | Active-Passive | Active-Passive | Active-Passive |
| IPS Throughput | 2 Gbps | 10 Gbps | 750 Mbps | N/A | N/A |
| Integrated I/O | 4 | 4 | 8 | N/A | N/A |
| Interfaces | RJ-45 / SFP | RJ-45 / SFP | RJ-45, SFP | RJ-45 / SFP | SFP |
| LAN Ports | 8 LAN Ports | 8 LAN Ports | 8 LAN Ports | 4 LAN Ports | N/A |
| Logging & Monitoring | Built-in / Syslog | Built-in / Syslog / Cloud Logging | Built-in, Syslog | Built-in / Syslog | Built-in / Syslog |
| Management Options | CLI / GUI / SNMP | Cloud / CLI / GUI / SNMP | CLI, GUI, SNMP | Cloud / CLI / GUI / REST API / SNMP | CLI / GUI / SNMP |
| Maximum Concurrent Sessions | 1000000 | 2.5 Million | 150,000 | N/A | 1,000,000 |
| Memory | 8 GB | 16 GB | 8 GB | 16 GB | 16 GB |
| New Sessions Per Second | 50000 | 50,000 | 10,000 | N/A | N/A |
| POE Ports | No | No | No | No | No |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply with Redundancy | AC Power Supply | AC Power Supply |
| Product Name | Cisco ASA5555-K9 Adaptive Security Appliance | ASA5585-S20-K7 | ASA5525-DC-K8 | ASA5585-S60-2A-K8 | ASA5585-S40-2D-K9 |
| Product Type | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance |
| Rack Units | 2 RU | 2 RU | 1 RU | 4 RU | 1 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 / RIP / Static Routing | OSPF / BGP / RIP / Static Routing |
| Security Services | 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 | Antivirus / Web Filtering / Application Control / IPS / VPN |
| Supported Applications | 50 | 500 | N/A | N/A | N/A |
| Supported VPN Types | IPSec / SSL VPN | IPSec / SSL VPN | IPSec, SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN |
| Switch Ports | Yes | Yes | Yes | No | No |
| Threat Protection Throughput | 3 Gbps | 15 Gbps | N/A | N/A | N/A |
| Use Case | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM |
| Users Supported | Unlimited | Unlimited | N/A | N/A | N/A |
| Users/Nodes | Unlimited | Unlimited | Unlimited | N/A | Unlimited |
| VPN Throughput | 1.5 Gbps | 5 Gbps | 1.0 Gbps | 10 Gbps | N/A |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 40 lbs | 35 lbs | 21 lbs | N/A | 30 lbs |
| Width | 17 inches | 17 inches | 17.5 inches | N/A | 17.3 inches |
Reviews & Ratings
B
Bennett Shaw
4
Reliable appliance with stable performance and minimal downtime.
C
Camille Foster
4
Professional-grade firewall with easy deployment and consistent results.
D
Dorian Hayes
5
Handles traffic loads efficiently while maintaining strong security.
E
Elise Monroe
5
Durable and dependable for critical network operations.
Questions & Answers
What is the Cisco ASA 5555-X (ASA5555-K9) firewall used for?
The Cisco ASA 5555-X is a next-generation enterprise firewall that delivers secure VPN connectivity, advanced threat prevention, and high-performance inspection for mid-sized to large networks.
What are the key hardware specifications of the ASA 5555-X?
The ASA 5555-X features eight Gigabit Ethernet data ports, one Gigabit Ethernet management port, AC power, and hardware acceleration for 3DES/AES encryption.
What throughput and performance can I expect from the ASA 5555-X?
The ASA 5555-X supports up to 3 Gbps of firewall throughput, up to 1 Gbps of IPS throughput, and up to 500 Mbps of VPN throughput with 3DES/AES acceleration.
Which encryption protocols does ASA 5555-X support?
The ASA 5555-X supports industry-standard 3DES and AES encryption with hardware acceleration, ensuring secure site-to-site and remote-access VPN tunnels.
How is the ASA 5555-X managed?
You can manage the ASA 5555-X via its dedicated Gigabit Ethernet management port using ASDM (Adaptive Security Device Manager) or through secure CLI via SSH.
What licensing options are available for the ASA 5555-X?
Cisco offers modular licensing for the ASA 5555-X, including Base Firewall, Security Plus for high availability and advanced throughput, and AnyConnect VPN licenses.
Does the ASA 5555-X support high availability configurations?
Yes, the ASA 5555-X supports active/standby high availability with Stateful Failover and Security Plus licensing for seamless service continuity.
What advanced security features are included in the ASA 5555-X?
The ASA 5555-X provides features such as intrusion prevention (IPS), URL filtering, malware defense, and identity-based access control when paired with Cisco Firepower services.
Can I deploy the ASA 5555-X in a data center environment?
Absolutely, the ASA 5555-X’s high throughput, eight GE data ports, and advanced security services make it ideal for data center perimeter or internal segmentation deployments.
How do I perform a software upgrade on the ASA 5555-X?
Use the ASDM software upgrade wizard or CLI commands to upload the new ASA software image to flash and configure the boot system variable before rebooting.
What are common troubleshooting steps for the ASA 5555-X?
Verify interface status, check ACLs, review syslogs, run show commands (show version, show conn), and use packet-tracer to simulate traffic flow issues.
What warranty and support options are offered for ASA 5555-X?
Cisco provides a limited lifetime hardware warranty and offers SMARTnet support contracts for 24×7 technical assistance, software updates, and hardware replacement.
Is the ASA 5555-X suitable for remote-access VPN deployments?
Yes, with AnyConnect support and up to 5,000 IPsec or SSL VPN peers, the ASA 5555-X delivers scalable, secure remote-access connectivity.
What is the difference between ASA 5555-X and ASA 5545-X?
The ASA 5555-X offers higher firewall (3 Gbps vs. 1.5 Gbps) and IPS throughput, larger concurrent session capacity, and more robust hardware acceleration compared to the ASA 5545-X.
What system requirements must be met before installing the ASA 5555-X?
Ensure rack space (1RU), adequate AC power (100–240V), proper cooling, and a valid Cisco software license prior to deploying the ASA 5555-X.
How do I configure site-to-site VPN on the ASA 5555-X?
Use ASDM or CLI to define IKE policies, create crypto maps, configure ACLs to permit interesting traffic, and apply the crypto map to the appropriate interface.