Chapter 28 Using Protection Tools

Configuring IP Audit for Basic IPS Support

Fields

•Policy Name—Sets the IP audit policy name. You cannot edit the name after you add it.

•Policy Type—Sets the policy type. You cannot edit the policy type after you add it.

–Attack—Sets the policy type as attack.

–Information—Sets the policy type as informational.

•Action—Sets one or more actions to take when a packet matches a signature. If you do not choose an action, then the default policy is used.

–Alarm—Generates a system message showing that a packet matched a signature. For a complete list of signatures, see IP Audit Signature List.

–Drop—Drops the packet.

–Reset—Drops the packet and closes the connection.

IP Audit Signatures

The Configuration > Firewall > Advanced > IP Audit > IP Audit Signatures pane lets you disable audit signatures. You might want to disable a signature if legitimate traffic continually matches a signature, and you are willing to risk disabling the signature to avoid large numbers of alarms.

For a complete list of signatures, see the “IP Audit Signature List” section on page 28-6.

Fields

•Enabled—Lists the enabled signatures.

•Disabled—Lists the disabled signatures.

•Disable—Moves the selected signature to the Disabled pane.

•Enable—Moves the selected signature to the Enabled pane.

IP Audit Signature List

Table 28-1lists supported signatures and system message numbers.

Table 28-1

Signature IDs and System Message Numbers

 

 

 

 

 

 

Signature

Message

 

 

 

ID

Number

Signature Title

Signature Type

Description

 

 

 

 

 

1000

400000

IP options-Bad Option List

Informational

Triggers on receipt of an IP datagram where

 

 

 

 

the list of IP options in the IP datagram header

 

 

 

 

is incomplete or malformed. The IP options

 

 

 

 

list contains one or more options that perform

 

 

 

 

various network management or debugging

 

 

 

 

tasks.

 

 

 

 

 

1001

400001

IP options-Record Packet Route

Informational

Triggers on receipt of an IP datagram where

 

 

 

 

the IP option list for the datagram includes

 

 

 

 

option 7 (Record Packet Route).

 

 

 

 

 

Cisco ASA Series Firewall ASDM Configuration Guide

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Cisco Systems ASA 5505 manual IP Audit Signatures, IP Audit Signature List, Signature Message Number Signature Title, 28-6
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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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