Chapter 30 Configuring the ASA CX Module

Information About the ASA CX Module

Monitor-Only Mode

For demonstration purposes, you can configure a service policy or a traffic-forwarding interface in monitor-only mode.

For guidelines and limitations for monitor-only mode, see the “Guidelines and Limitations” section on page 30-6.

Service Policy in Monitor-Only Mode, page 30-3

Traffic-Forwarding Interface in Monitor-Only Mode, page 30-3

Service Policy in Monitor-Only Mode

For testing and demonstration purposes, you can configure the ASA to send a duplicate stream of read-only traffic to the ASA CX module, so you can see how the module inspects the traffic without affecting the ASA traffic flow. In this mode, the ASA CX module inspects the traffic as usual, makes policy decisions, and generates events. However, because the packets are read-only copies, the module actions do not affect the actual traffic. Instead, the module drops the copies after inspection. Figure 30-2shows the ASA CX module in monitor-only mode.

Figure 30-2 ASA CX Monitor-Only Mode

 

ASA

 

 

 

Main System

 

 

 

Firewall

VPN

 

inside

Decryption

outside

Policy

 

Copied Traffic

 

 

 

ASA CX inspection

 

 

 

ASA CX

 

303698

 

 

 

Traffic-Forwarding Interface in Monitor-Only Mode

You can alternatively configure ASA interfaces to be traffic-forwarding interfaces, where all traffic received is forwarded directly to the ASA CX module without any ASA processing. For testing and demonstration purposes, traffic-forwarding removes the extra complication of ASA processing.

Traffic-forwarding is only supported in monitor-only mode, so the ASA CX module drops the traffic after inspecting it. Figure 30-3shows the ASA GigabitEthernet 0/3 interface configured for traffic-forwarding. That interface is connected to a switch SPAN port so the ASA CX module can inspect all of the network traffic.

Cisco ASA Series Firewall ASDM Configuration Guide

30-3

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Cisco Systems ASA Services Module, ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5585-X Service Policy in Monitor-Only Mode, 30-3

ASA Services Module, ASA 5555-X, ASA 5545-X, ASA 5585-X, ASA 5580 specifications

Cisco Systems has long been a leader in the field of network security, and its Adaptive Security Appliance (ASA) series is a testament to this expertise. Within the ASA lineup, models such as the ASA 5505, ASA 5580, ASA 5585-X, ASA 5545-X, and ASA 5555-X stand out for their unique features, capabilities, and technological advancements.

The Cisco ASA 5505 is designed for small businesses or branch offices. It provides essential security features such as firewall protection, flexible VPN capabilities, and intrusion prevention. The ASA 5505 supports a user-friendly interface, allowing for straightforward management. Its built-in threat detection and prevention tools provide a layered defense, and with scalability in mind, it can accommodate various expansion options as organizational needs grow.

Moving up the line, the ASA 5580 delivers greater throughput and advanced security features. This model is suited for medium to large enterprises that require robust protection against increasingly sophisticated threats. Its multi-core architecture allows it to manage high volumes of traffic seamlessly while maintaining excellent performance levels. The ASA 5580 also supports application-layer security and customizable access policies, making it highly adaptable to diverse security environments.

The ASA 5585-X further enhances Cisco's security offerings with advanced malware protection and extensive security intelligence capabilities. It incorporates next-generation firewall features, including context-aware security, and supports advanced threat detection technologies. This model is ideal for large enterprises or data centers that prioritize security while ensuring uninterrupted network performance and availability.

For enterprises requiring a balance of performance and security, the ASA 5545-X presents a compelling option. This model features scalable performance metrics, high availability, and integrated advanced threat protection. Coupled with advanced endpoint protection and detailed monitoring capabilities, the ASA 5545-X enables organizations to manage their security posture effectively.

Lastly, the ASA 5555-X blends cutting-edge technologies with strong security infrastructures. It boasts high throughput and the ability to execute deep packet inspections. Its sophisticated architecture supports threat intelligence feeds that provide real-time security updates, making it a powerful tool against modern threats.

Each of these Cisco ASA models brings specific advantages to varied environments. Their integrative capabilities enable businesses to enhance their security postures while benefiting from seamless scalability and management. As cybersecurity threats evolve, these advanced appliances play a vital role in protecting valuable digital assets.