IPS Command Modes, Character Description

Chapter 1 Introducing the CLI Configuration Guide

IPS Command Modes

The Cisco IPS CLI has the following command modes:

•privileged EXEC—Entered when you log in to the CLI interface.

•global configuration—Entered from privileged EXEC mode by entering configure terminal. The command prompt is sensor(config)#.

•service mode configuration—Entered from global configuration mode by entering service service-name. The command prompt is sensor(config-ser)#, where ser is the first three characters of the service name.

•multi-instance service mode—Entered from global configuration mode by entering service service-namelog-instance-name. The command prompt is sensor(config-log)#where log is the first three characters of the log instance name. The only multi-instance services in the system are anomaly detection, signature definition, and event action rules.

Regular Expression Syntax

Note The syntax in this section applies only to regular expressions used as part of a CLI command. It does not apply to regular expressions used by signatures.

Regular expressions are text patterns that are used for string matching. Regular expressions contain a mix of plain text and special characters to indicate what kind of matching to do. For example, if you are looking for a numeric digit, the regular expression to search for is “[0-9]”. The brackets indicate that the character being compared should match any one of the characters enclosed within the bracket. The dash (-) between 0 and 9 indicates that it is a range from 0 to 9. Therefore, this regular expression will match any character from 0 to 9, that is, any digit.

To search for a specific special character, you must use a backslash before the special character. For example, the single character regular expression “\*” matches a single asterisk.

The regular expressions defined in this section are similar to a subset of the POSIX Extended Regular Expression definitions. In particular, “[..]”, “[==]”, and “[::]” expressions are not supported. Also, escaped expressions representing single characters are supported. A character can be represented as its hexadecimal value, for example, \x61 equals ‘a,’ so \x61 is an escaped expression representing the character ‘a.’

The regular expressions are case sensitive. To match “STRING” or “string” use the following regular expression: “[Ss][Tt][Rr][Ii][Nn][Gg].”

Table 1-2lists the special characters.

			Table 1-2	Regular Expression Syntax

			Character	Description

^				Beginning of the string. The expression “^A” will match an “A” only at the beginning
				of the string.

^				Immediately following the left-bracket ([). Excludes the remaining characters within
				brackets from matching the target string. The expression “[^0-9]” indicates that the
				target character should not be a digit.

		Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

	1-8			OL-29168-01
	1-8			OL-29168-01

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 IPS Command Modes, Regular Expression Syntax, Character Description

Models: IPS4510K9