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Cisco ASA 5545-X Firewall
The Cisco ASA 5545-X Firewall is a high-performance enterprise security appliance designed for network firewalling, VPN connectivity, intrusion prevention and secure network access. It provides up to 3 Gbps stateful-inspection throughput and Gigabit Ethernet connectivity for enterprise network environments.
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Product Description
Cisco ASA 5545-X Enterprise Firewall
The Cisco ASA 5545-X Adaptive Security Appliance is an enterprise-class firewall designed to protect business networks, data-center edges and internet-facing infrastructure.
As part of Cisco’s ASA 5500-X family, the ASA 5545-X was designed to provide firewall services together with advanced security capabilities such as IPS, Application Visibility and Control, and Web Security services. Unlike older ASA 5500 platforms that required separate hardware for certain services, the 5500-X architecture was designed to support these services directly.
The ASA 5545-X provides up to 3 Gbps stateful-inspection throughput, while Cisco’s published specifications list up to 1.5 Gbps multiprotocol throughput and 900 Mbps IPS throughput. Actual performance depends on traffic type, configuration and enabled security services.
Key Features
- Model: Cisco ASA 5545-X
- Enterprise adaptive security appliance
- Up to 3 Gbps stateful-inspection throughput
- Up to 1.5 Gbps multiprotocol throughput
- Up to 900 Mbps IPS throughput
- Up to 1,000,000 concurrent firewall connections
- Up to 50,000 connections per second
- Gigabit Ethernet connectivity
- IPsec VPN support
- SSL VPN support
- Active/Active High Availability support
- Security contexts
- Application Visibility and Control capabilities with appropriate services
- Web Security capabilities with appropriate services
- 1U rack-mount form factor
Cisco’s published product configurations include ASA5545-K8, ASA5545-DC-K8, ASA5545-K9 and ASA5545-CU-2AC-K9 variants, with differences in licensing, power supply and interface configuration.
Network Interfaces
Interface configuration depends on the exact ASA 5545-X SKU.
This makes the ASA 5545-X suitable for organizations that require established Cisco ASA security architecture and compatibility with existing Cisco environments.
VPN Connectivity
The ASA 5545-X supports secure VPN connectivity for enterprise environments. Cisco’s published configurations specify up to 2,500 IPsec VPN peers for the ASA 5545-X Firewall and IPS editions.
Consequently, the appliance can be used for site-to-site VPN deployments and remote-access security architectures, subject to the appropriate software and licensing configuration.
High Availability
The ASA 5545-X supports Active/Active High Availability, allowing organizations to design redundant firewall deployments.
This can be particularly useful for enterprise networks where firewall availability is critical and downtime must be minimized. Cisco’s published ASA 5545-X configurations include Active/Active High Availability.
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Technical Specifications
| Specification | Cisco ASA 5545-X |
|---|---|
| Product Family | Cisco ASA 5500-X |
| Model | ASA 5545-X |
| Firewall Type | Adaptive Security Appliance |
| Stateful Inspection Throughput | Up to 3 Gbps |
| Multiprotocol Throughput | Up to 1.5 Gbps |
| IPS Throughput | Up to 900 Mbps |
| Concurrent Firewall Connections | Up to 1,000,000 |
| New Connections/sec | Up to 50,000 |
| Standard Data Interfaces | 8 × 1GbE copper on common configurations |
| Management Interface | 1 × 1GbE |
| Expanded Configuration | Up to 14 × 1GbE data ports on ASA5545-CU-2AC-K9 |
| IPsec VPN Peers | Up to 2,500 |
| SSL VPN Peers | Configuration dependent |
| High Availability | Active/Active |
| Security Contexts | Up to 2 in listed configurations |
| Form Factor | Rack Mount |
| Series Status | End of Support |
FAQs
1. What is the Cisco ASA 5545-X?
The Cisco ASA 5545-X is an enterprise Adaptive Security Appliance designed for firewall, VPN and network security deployments.
2. What is the throughput of Cisco ASA 5545-X?
Cisco lists up to 3 Gbps stateful-inspection throughput, 1.5 Gbps multiprotocol throughput and 900 Mbps IPS throughput.
3. How many ports does the ASA 5545-X have?
The exact interface count depends on the SKU. Common configurations provide 8 copper Gigabit Ethernet data ports and 1 Gigabit management port, while the ASA5545-CU-2AC-K9 provides 14 copper Gigabit data ports plus 1 management port.
4. Does Cisco ASA 5545-X support VPN?
Yes. Cisco lists up to 2,500 IPsec VPN peers for the ASA 5545-X Firewall and IPS configurations.
5. Does the ASA 5545-X support high availability?
Yes. Cisco's ASA 5545-X configurations support Active/Active High Availability.
6. Is Cisco ASA 5545-X still supported?
No. Cisco lists the ASA 5545-X as an end-of-support product, with the platform's end-of-support date listed as September 30, 2025.
7. Is Cisco ASA 5545-X suitable for a replacement firewall?
It can be appropriate when an organization needs to replace an existing ASA 5545-X with compatible legacy hardware. However, because the platform is end-of-support, organizations planning a new deployment should consider a current Cisco Secure Firewall platform instead. Cisco's migration guidance recommends newer Secure Firewall platforms for replacement.
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