Chapter 9 Configuring Anomaly Detection

Configuring the Illegal Zone

Configuring the Illegal Zone

This section describes how to configure the illegal zone, and contains the following topics:

•Understanding the Illegal Zone, page 9-20

•Configuring the Illegal Zone, page 9-20

•Configuring TCP Protocol for the Illegal Zone, page 9-21

•Configuring UDP Protocol for the Illegal Zone, page 9-24

•Configuring Other Protocols for the Illegal Zone, page 9-26

Understanding the Illegal Zone

The illegal zone should represent IP address ranges that should never be seen in normal traffic, for example, unallocated IP addresses or part of your internal IP address range that is unoccupied. You then add the IP addresses that belong to this zone. If you do not configure IP addresses for all zones, all packets are sent to the default zone, the external zone.

You can enable or disable TCP, UDP, and other protocols for the internal zone. You can configure a destination port for the TCP and UDP protocols and a protocol number for the other protocols. You can either use the default thresholds or override the scanner settings and add your own thresholds and histograms.

Configuring the Illegal Zone

Use the illegal-zone {enabled ip-address-range tcp udp other} command in service anomaly detection submode to enable the illegal zone, add IP addresses to the illegal zone, and specify protocols.

The following options apply:

•enabled {false true}—Enables/disables the zone.

•ip-address-range—Specifies the IP addresses of the subnets in the zone. The valid value is <A.B.C.D>-<A.B.C.D>[,<A.B.C.D>-<A.B.C.D>].

Note The second IP address in the range must be greater than or equal to the first IP address.

•tcp—Lets you configure TCP protocol.

•udp—Lets you configure UDP protocol.

•other—Lets you configure other protocols besides TCP and UDP.

Configuring the Illegal Zone

To configure the illegal zone, follow these steps:

Step 1 Log in to the CLI using an account with administrator privileges.

Step 2 Enter anomaly detection illegal zone submode.

sensor# configure terminal

sensor(config)# service anomaly-detection ad0

sensor(config-ano)# illegal-zone

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

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Cisco Systems IPS4510K9 manual Configuring the Illegal Zone, Understanding the Illegal Zone
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IPS4510K9 specifications

Cisco Systems has long been a leading player in network security, and its IPS (Intrusion Prevention System) series is a testament to its commitment to safeguarding digital environments. Among its notable offerings are the IPS4510K9 and IPS4520K9 models, both designed to provide advanced threat protection for mid-sized to large enterprise networks.

The Cisco IPS4510K9 and IPS4520K9 are distinguished by their cutting-edge features that help organizations defend against a myriad of cyber threats. These systems utilize a multi-layered approach to security, integrating intrusion prevention, advanced malware protection, and comprehensive visibility across the network.

One of the primary characteristics of the IPS4510K9 is its high performance. It boasts a throughput of up to 1 Gbps, making it suitable for environments that demand rapid data processing and real-time responses to threats. The IPS4520K9, on the other hand, enhances that capability with improved throughput of up to 2 Gbps, accommodating larger enterprises with heavier network traffic. These models are equipped with powerful processors that support complex signature matching and can intelligently distinguish between legitimate traffic and potential threats.

In addition to performance, both models are designed with scalability in mind. They can be easily integrated into existing Cisco infrastructures. This facilitates a seamless enhancement of security without causing significant interruptions to ongoing operations. Moreover, they offer flexible deployment options, allowing organizations to operate them inline or out of band depending on their specific needs.

The Cisco IPS4510K9 and IPS4520K9 leverage advanced detection technologies, utilizing a variety of signature types and heuristic analysis to detect known and unknown threats effectively. They are equipped with real-time alerting and reporting capabilities, giving security teams immediate visibility into potential breaches and enabling them to respond swiftly.

Furthermore, both models support a range of management options through the Cisco Security Manager, allowing for centralized administration, streamlined policy management, and enhanced monitoring capabilities. Automated updates ensure the systems remain current with the latest threat intelligence, vital for staying ahead of evolving cyber threats.

In summary, the Cisco Systems IPS4510K9 and IPS4520K9 represent powerful solutions for organizations seeking robust intrusion prevention capabilities. With their high performance, scalability, and advanced detection technologies, these systems are essential tools in the ever-changing landscape of cybersecurity, providing enterprises with the peace of mind needed to operate securely in today's digital world.
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