Chapter 30 Configuring the ASA CX Module

Licensing Requirements for the ASA CX Module

•Do not configure ASA inspection on HTTP traffic.

•Do not configure Cloud Web Security (ScanSafe) inspection. If you configure both the ASA CX action and Cloud Web Security inspection for the same traffic, the ASA only performs the ASA CX action.

•Other application inspections on the ASA are compatible with the ASA CX module, including the default inspections.

•Do not enable the Mobile User Security (MUS) server; it is not compatible with the ASA CX module.

•Do not enable ASA clustering; it is not compatible with the ASA CX module.

•If you enable failover, when the ASA fails over, any existing ASA CX flows are transferred to the new ASA, but the traffic is allowed through the ASA without being acted upon by the ASA CX module. Only new flows recieved by the new ASA are acted upon by the ASA CX module.

•(9.1(1) and earlier) Does not support NAT 64. In 9.1(2) and later, NAT 64 is supported.

Licensing Requirements for the ASA CX Module

Model

 

License Requirement

 

 

 

All models

 

Base License.

 

 

 

 

The ASA CX module and PRSM require additional licenses. See the ASA CX documentation for more

 

information.

Prerequisites

To use PRSM to configure the ASA, you need to install a certificate on the ASA for secure communications. By default, the ASA generates a self-signed certificate. However, this certificate can cause browser prompts asking you to verify the certificate because the publisher is unknown. To avoid these browser prompts, you can instead install a certificate from a known certificate authority (CA). If you request a certificate from a CA, be sure the certificate type is both a server authentication certificate and a client authentication certificate. See the Chapter 40, “Configuring Digital Certificates,” in the general operations configuration guide for more information.

Guidelines and Limitations

Context Mode Guidelines

(9.1(2) and earlier) Supported in single context mode only. Does not support multiple context mode.

(9.1(3) and later) Supported in multiple context mode. See the following guidelines:

•The ASA CX module itself (configured in PRSM) is a single context mode device; the context-specific traffic coming from the ASA is checked against the common ASA CX policy.

•For ASA CX module support, you cannot use the same IP addresses in multiple contexts; each context must include unique networks.

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Cisco Systems ASA 5555-X, ASA 5505, ASA 5545-X, ASA 5585-X Licensing Requirements for the ASA CX Module, Prerequisites, 30-6
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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.
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