Chapter 11 Configuring Inspection of Basic Internet Protocols

Instant Messaging Inspection

IM Inspection Overview

The IM inspect engine lets you apply fine grained controls on the IM application to control the network usage and stop leakage of confidential data, propagation of worms, and other threats to the corporate network.

Adding a Class Map for IM Inspection

Use the Add Service Policy Rule Wizard - Rule Actions dialog box to configure IP Options inspection.

This wizard is available from the Configuration > Firewall > Service Policy Rules > Add > Add Service Policy Rule Wizard - Rule Actions dialog box.

Step 1 Choose Configuration > Firewall > Objects > Class Maps > Instant Messaging (IM). The table displaying the configured class maps for Instant Messaging Inspection appears.

Step 2 To add a new class map, click Add. The Add Instant Messaging (IM) Traffic Class Map dialog box appears.

Step 3 Enter a name for the class map.

Step 4 (Optional) Enter a description for the class map. The description can contain up to 200 characters. Step 5 In the Match Option field, click an option for the class map:

•Match All—Specifies that traffic must match all criteria to match the class map. By default, the Match All option is selected.

•Match Any—Specifies that the traffic matches the class map if it matches at least one of the criteria.

Step 6 Click Add to add a match criteria for the class map. The Add Instant Messaging (IM) Match Criterion dialog box appears.

Step 7 In the Match Type field, click the Match or No Match radio button.

Step 8 In the Criterion drop-down list, select one of the following options and specify the criteria value. Depending on which option you select, the Value fields dynamically refresh to display the appropriate values for that criteria.

•Protocol—Select to match traffic of a specific IM protocol, such as Yahoo Messenger or MSN Messenger.

•Service—Select to match a specific IM service, such as chat, file-transfer, webcam, voice-chat, conference, or games.

•Version—Select to match the version of the IM message. In the Value fields, click the Regular Expression or Regular Expression Class option and select an expression from the drop-down list.

See Configuring Regular Expressions, page 20-11in the general operations configuration guide.

•Client Login Name—Select to match the source login name of the IM message. In the Value fields, click the Regular Expression or Regular Expression Class option and select an expression from the drop-down list.

See Configuring Regular Expressions, page 20-11in the general operations configuration guide.

•Client Peer Login Name—Select to match the destination login name of the IM message. In the Value fields, click the Regular Expression or Regular Expression Class option and select an expression from the drop-down list.

See Configuring Regular Expressions, page 20-11in the general operations configuration guide.

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Cisco Systems ASA 5555-X, ASA 5505, ASA 5545-X, ASA 5580 IM Inspection Overview, Adding a Class Map for IM Inspection, 11-40
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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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