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ASA 5525-X CU model provides dependable firewall and VPN performance for enterprise networks.
ASA5525-CU-K9
ASA 5525-X WITH SW 14GBE DATA 1GBE MGMT 3DES/AES
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Name:
ASA5525-CU-K9
- Description:
- ASA 5525-X WITH SW 14GBE DATA 1GBE MGMT 3DES/AES
- Rating:
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- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658488078
- Condition:
- Warranty:
- 3
- List Price:
$13,995.00
- Price:
$7,705.0044.9% off
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ASA5525-CU-K9 Overview
ASA5525-CU-K9 is a rack-mounted hardware appliance engineered for high-performance network security. It delivers up to 2 Gbps of firewall throughput and 1 Gbps of VPN throughput, featuring an integrated port configuration with 8 LAN ports and 2 SFP WAN ports, all powered by a redundant AC power supply to ensure continuous operation in enterprise and branch office environments.
ASA5525-CU-K9 supports a comprehensive suite of security services including IPS, antivirus, web filtering, VPN, and application control, making it ideal for deployment in environments requiring robust threat mitigation and secure remote access. Its management options—accessible via CLI, GUI (ASDM), and centralized configurations—combined with built-in high availability in an active-passive failover setup, provide scalable and resilient security for modern network infrastructures.
ASA5525-CU-K9 price is $7,705.00, a 44.9% saving from the Cisco list price of $13,995.00. ASA5525-CU-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for ASA5525-CU-K9 for additional pricing. Browse the full Cisco Asa 5500 Series series or explore all Cisco products.
ASA5525-CU-K9 Specifications
- Product Type
- Firewall Appliance
- Architecture
- Rack-mount
- Deployment Type
- Business / 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
- 2 Gbps
- Threat Protection Throughput
- N/A
- IPS Throughput
- N/A
- VPN Throughput
- 1 Gbps
- Supported Applications
- N/A
- Centralized Configuration & Reporting
- Yes
- Feature
- Next-Generation Firewall, IPS, VPN, Antivirus, Web Filtering
- Concurrent Sessions
- 250,000
- Maximum Concurrent Sessions
- 250,000
- Users/Nodes
- Unlimited
- Integrated I/O
- N/A
- New Sessions Per Second
- N/A
- 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
- No
- POE Ports
- No
- Management Options
- CLI / GUI / SNMP / Centralized
- Logging & Monitoring
- Built-in / Syslog / SNMP
- Firewall Policies Supported
- N/A
- Users Supported
- N/A
- Memory
- 8 GB
- Flash Storage
- 16 GB
- Expansion Slots
- N/A
- Form Factor
- Rack-mount
- Rack Units
- 1 RU
- Device Type
- NGFW
- Product Name
- Cisco ASA5525-CU-K9
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
ASA5525-CU-K9 Use Case
Data Center DMZ Segmentation with ASA5525-X for High-Speed Threat Protection
In large enterprise data centers, the ASA5525-CU-K9-ASA 5525-X uses its 14 GbE data ports and 3DES/AES encryption to isolate public-facing servers in a DMZ. This deployment delivers ultra-low latency firewalling, automated intrusion prevention, and encrypted management via 1 GbE, resulting in a 60% reduction in breach risk and uninterrupted service availability.
Global Branch Office VPN Mesh for Secure, High-Throughput Connectivity
A multinational retailer deploys ASA5525-X units at 200 branch locations to establish an encrypted VPN mesh over 14 GbE backhaul links. The integrated 3DES/AES engine and 1 GbE management interface ensure end-to-end data integrity, boosting remote access performance by 40% while centralizing policy management and reducing operational overhead.
PCI-DSS Compliance & Encrypted Transaction Processing
A financial institution uses the ASA5525-CU-K9-ASA 5525-X appliance to secure payment card data in transit and at rest. With hardware-accelerated AES encryption across 14 GbE data channels and dedicated 1 GbE management, the solution meets strict PCI-DSS standards, automates audit reporting, and slashes compliance costs by up to 30%.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| ASA5525-CU-K9 |  ASA5545-K7 |  ASA5510-SSL100-K9 |  ASA5505-50-BUN-K9 |  ASA5580-40-10GE-K9 | |
|---|---|---|---|---|---|
| Architecture | Rack-mount | Rack-mount | Rack-mount | Desktop | Rack-mount |
| Centralized Configuration & Reporting | Yes | Yes | N/A | Supported (Cisco ASDM, Cisco Security Manager) | Cisco ASDM / Cisco Security Manager |
| Concurrent Sessions | 250,000 | 100000 | 50000 | 32000 | 100000 |
| Deployment Type | Business / Enterprise / Branch Office | Enterprise / Branch Office | Enterprise / Branch Office | Small Business / Branch Office | Enterprise / Data Center |
| Depth | N/A | 17.2 inches | 18 inches | N/A | 18 inches |
| Device Type | NGFW | NGFW | NGFW | NGFW | NGFW |
| Expansion Slots | N/A | SFP | N/A | N/A | N/A |
| Feature | Next-Generation Firewall, IPS, VPN, Antivirus, Web Filtering | Next-Generation Firewall with Integrated IPS, Antivirus, Web Filtering, and VPN | Integrated SSL VPN | Stateful Inspection, NAT, VPN | Advanced threat protection, VPN, IPS, antivirus, web filtering, high availability clustering |
| Firewall Layer Supported | Layer 3 / Layer 4 / Layer 7 | Layer 4 / Layer 7 | Layer 3 | Layer 3 / Layer 4 | Layer 3 |
| Firewall Policies Supported | N/A | 250 | N/A | N/A | N/A |
| Firewall Throughput | 2 Gbps | 4.5 Gbps | 150 Mbps | 0.15 Gbps | 10 Gbps |
| Flash Storage | 16 GB | 128 GB | 8 GB | 128 MB | 128 GB |
| Form Factor | Rack-mount | 1 RU | 1 RU | Desktop | 2 RU |
| Height | N/A | 1.75 inches | 1.75 inches | N/A | 3.5 inches |
| High Availability | Active-Passive | Active-Passive | Active-Passive | Not Supported | Active-Passive |
| IPS Throughput | N/A | 1.5 Gbps | N/A | N/A | 8 Gbps |
| Integrated I/O | N/A | 6 | N/A | 9 | 40 |
| Interfaces | RJ-45 / SFP | RJ-45 / SFP | RJ-45 | RJ-45 | SFP+ |
| LAN Ports | 8 LAN Ports | 8 LAN Ports | 8 LAN Ports | 8 LAN Ports | 40 LAN Ports |
| Logging & Monitoring | Built-in / Syslog / SNMP | Built-in / Syslog | Built-in | Built-in / Syslog | Built-in / Syslog |
| Management Options | CLI / GUI / SNMP / Centralized | Cloud / CLI / GUI / SNMP | CLI / GUI / SNMP | CLI, GUI (ASDM), SNMP | CLI / GUI / SNMP |
| Maximum Concurrent Sessions | 250,000 | 200000 | 50000 | 32000 | 100000 |
| Memory | 8 GB | 8 GB | 1 GB | 256 MB | 16 GB |
| New Sessions Per Second | N/A | 10000 | N/A | N/A | 20000 |
| 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 ASA5525-CU-K9 | ASA5545-K7 | ASA5510-SSL100-K9 | Cisco ASA5505-50-BUN-K9 | ASA5580-40-10GE-K9 |
| Product Type | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance | Firewall Appliance |
| Rack Units | 1 RU | 1 RU | 1 RU | N/A | 2 RU |
| Redundant Power Supply Supported | Yes | Yes | No | No | Yes |
| Routing Protocols Supported | OSPF / BGP / RIP / Static Routing | OSPF / BGP / RIP / Static Routing | OSPF / RIP / Static Routing | Static Routing, RIP | Static Routing |
| Security Services | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / Application Control / IPS / VPN | Antivirus / Web Filtering / IPS / VPN | VPN | Antivirus / Web Filtering / IPS / VPN |
| Supported Applications | N/A | N/A | N/A | N/A | 8 |
| Supported VPN Types | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / SSL VPN |
| Switch Ports | No | Yes | No | Yes | No |
| Threat Protection Throughput | N/A | 2 Gbps | N/A | N/A | 8 Gbps |
| Use Case | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / UTM | VPN / Secure Access / IPS / UTM |
| Users Supported | N/A | N/A | N/A | 50 | N/A |
| Users/Nodes | Unlimited | Unlimited | N/A | 50 | Unlimited |
| VPN Throughput | 1 Gbps | 3 Gbps | 100 Mbps | 0.05 Gbps | 6 Gbps |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 1 WAN | N/A |
| Weight | N/A | 15 lbs | 14 lbs | N/A | 30 lbs |
| Width | N/A | 17.2 inches | 17 inches | N/A | 17.3 inches |
Reviews & Ratings
Z
Zachary Blake
4
Professional-grade appliance with consistent throughput and low latency.
A
Amelia Hayes
5
Handles medium enterprise traffic reliably.
B
Bryson Monroe
5
Durable and easy to manage firewall appliance.
C
Cleo Lane
4
Stable operation for critical network applications.
Questions & Answers
What is the Cisco ASA5525-CU-K9 (ASA 5525-X)?
The Cisco ASA5525-CU-K9 (ASA 5525-X) is a next-generation firewall appliance with integrated SW, 14x 1 GbE data ports, 1x 1 GbE management port, and 3DES/AES encryption.
What is the firewall throughput of the ASA 5525-X?
The ASA 5525-X delivers up to 1.9 Gbps of firewall throughput and 450 Mbps of IPS throughput with all security services enabled.
How many and what type of interfaces does the ASA5525-CU-K9 provide?
It provides 14 gigabit Ethernet data interfaces and one dedicated 1 GbE management port.
Which VPN capabilities are supported on the ASA 5525-X?
The ASA 5525-X supports site-to-site IPsec VPN, remote access SSL and IPsec VPN, and AnyConnect client sessions up to the licensed limit.
What encryption standards are available on the ASA5525-CU-K9?
It includes 3DES and AES encryption for secure VPN tunnels and data-in-transit protection.
What does the CU license include on the ASA 5525-X?
The CU (Connection Unlimited) license provides unlimited concurrent firewall and VPN connections.
Can I deploy the ASA 5525-X in high-availability mode?
Yes, the ASA 5525-X supports active/standby high-availability configurations for seamless failover.
What power options are available for this appliance?
The ASA 5525-X uses an internal, single-input AC power supply rated at 100–240 VAC, 50–60 Hz.
Is the ASA5525-CU-K9 rack-mountable?
Yes, the ASA 5525-X fits in a standard 1U rack space with included rack-mount brackets.
What is the typical power consumption of the ASA 5525-X?
Average power consumption is approximately 45 W under normal load conditions.
Does the ASA5525-CU-K9 support Cisco FirePOWER services?
Yes, it can be upgraded with the FirePOWER services module for advanced threat protection and AMP.
How do I configure the management interface on the ASA 5525-X?
Connect to the dedicated management port, assign an IP address via ASDM or CLI, and apply your network settings.
What warranty and support options are available?
Cisco offers a one-year hardware warranty with 8x5xNBD support, upgradable to 24x7x4 SLA through a SMARTnet contract.
Can I upgrade the ASA 5525-X software license?
Yes, you can upgrade throughput, VPN and FirePOWER licenses via Cisco’s Software Licensing portal.
Is the ASA 5525-X suitable for mid-sized branch offices?
Absolutely. Its balanced performance, integrated security services, and CU license make it ideal for mid-sized enterprises and branch deployments.
Does the ASA5525-CU-K9 integrate with Cisco Umbrella?
Yes, it supports Cisco Umbrella integration for DNS-layer security and threat intelligence enforcement.