Chapter 12 Configuring Inspection for Voice and Video Protocols

SIP Inspection

SIP instant messaging (IM) extensions: Enabled.

Non-SIP traffic on SIP port: Permitted.

Hide server’s and endpoint’s IP addresses: Disabled.

Mask software version and non-SIP URIs: Disabled.

Ensure that the number of hops to destination is greater than 0: Enabled.

RTP conformance: Not enforced.

SIP conformance: Do not perform state checking and header validation.

–Medium

SIP instant messaging (IM) extensions: Enabled.

Non-SIP traffic on SIP port: Permitted.

Hide server’s and endpoint’s IP addresses: Disabled.

Mask software version and non-SIP URIs: Disabled.

Ensure that the number of hops to destination is greater than 0: Enabled.

RTP conformance: Enforced.

Limit payload to audio or video, based on the signaling exchange: No

SIP conformance: Drop packets that fail state checking.

–High

SIP instant messaging (IM) extensions: Enabled.

Non-SIP traffic on SIP port: Denied.

Hide server’s and endpoint’s IP addresses: Disabled.

Mask software version and non-SIP URIs: Enabled.

Ensure that the number of hops to destination is greater than 0: Enabled.

RTP conformance: Enforced.

Limit payload to audio or video, based on the signaling exchange: Yes

SIP conformance: Drop packets that fail state checking and packets that fail header validation.

–Customize—Opens the Add/Edit SIP Policy Map dialog box for additional settings.

–Default Level—Sets the security level back to the default level of Low.

Add/Edit SIP Policy Map (Security Level)

Configuration > Global Objects > Inspect Maps > SIP > SIP Inspect Map > Basic View

The Add/Edit SIP Policy Map pane lets you configure the security level and additional settings for SIP application inspection maps.

Fields

•Name—When adding a SIP, enter the name of the SIP map. When editing a SIP map, the name of the previously configured SIP map is shown.

•Description—Enter the description of the SIP map, up to 200 characters in length.

•Security Level—Select the security level (high or low).

Cisco ASA Series Firewall ASDM Configuration Guide

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Cisco Systems ASA 5585-X, ASA 5505, ASA 5545-X, ASA 5555-X, ASA 5580 manual Add/Edit SIP Policy Map Security Level, 12-27
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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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