Multi String Engine

Appendix B Signature Engines

Multi String Engine

Table B-15	Meta Engine Parameters (continued)

Parameter		Description		Value

meta-key		Specifies the storage type for the Meta signature:		•	Axxx
		•	Attacker address	•	AxBx
		• Attacker and victim addresses		•	AaBb
		• Attacker and victim addresses and ports		•	xxBx
		•	Victim address

unique-victim-ports		Specifies the number of unique victims ports		1 to 256
		required per Meta signature.

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•For an example of a custom Meta engine signature, see Example Meta Engine Signature, page 7-46.

•For more information on the parameters common to all signature engines, see Master Engine, page B-4.

Caution The Multi String engine can have a significant impact on memory usage.

The Multi String engine lets you define signatures that inspect Layer 4 transport protocol (ICMP, TCP, and UDP) payloads using multiple string matches for one signature. You can specify a series of regular expression patterns that must be matched to fire the signature. For example, you can define a signature that looks for regex 1 followed by regex 2 on a UDP service. For UDP and TCP you can specify port numbers and direction. You can specify a single source port, a single destination port, or both ports. The string matching takes place in both directions.

Use the Multi String engine when you need to specify more than one Regex pattern. Otherwise, you can use the String ICMP, String TCP, or String UDP engine to specify a single Regex pattern for one of those protocols.

Table B-16lists the parameters specific to the Multi String Engine.

Table B-16	Multi String Engine Parameters

Parameter		Description	Value

inspect-length		Specifies the length of the stream or packet that	0 to 4294967295
		must contain all offending strings for the signature
		to fire.

protocol		Specifies the Layer 4 protocol selection.	icmp
			tcp
			udp

	Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

OL-29168-01		B-35
OL-29168-01		B-35

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.

Cisco Systems IPS4510K9 manual Multi String Engine

Models: IPS4510K9

Parameter

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