Appendix B Signature Engines

Service Engines

Table B-19lists the parameters that are specific to the Service FTP engine.

Table B-19

Service FTP Engine Parameters

 

 

 

 

 

Parameter

 

Description

Value

 

 

 

 

direction

 

Specifies the direction of traffic:

from-service

 

 

• Traffic from service port destined to client port.

to-service

 

 

 

 

 

• Traffic from client port destined to service port.

 

 

 

 

ftp-inspection-type

Specifies the type of inspection to perform:

bad-port-cmd-address

 

 

• Looks for an invalid address in the FTP port

bad-port-cmd-port

 

 

command.

pasv

 

 

 

 

 

• Looks for an invalid port in the FTP port

 

 

 

command.

 

 

 

• Looks for the PASV port spoof.

 

 

 

 

 

service-ports

 

Specifies a comma-separated list of ports or port

0 to 655351

 

 

ranges where the target service resides.

a-b[,c-d]

 

 

 

swap-attacker-victim

Swaps the attacker and victim addresses and ports

true false (default)

 

 

(source and destination) in the alert message and in any

 

 

 

actions taken.

 

 

 

 

 

1. The second number in the range must be greater than or equal to the first number.

For More Information

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

Service Generic Engine

The Service Generic engine allows programmatic signatures to be issued in a config-file-only signature update. It has a simple machine and assembly language that is defined in the configuration file. It runs the machine code (distilled from the assembly language) through its virtual machine, which processes the instructions and pulls the important pieces of information out of the packet and runs them through the comparisons and operations specified in the machine code. It is intended as a rapid signature response engine to supplement the String and State engines.

New functionality adds the Regex parameter to the Service Generic engine and enhanced instructions. The Service Generic engine can analyze traffic based on the mini-programs that are written to parse the packets. These mini-programs are composed of commands, which dissect the packet and look for certain conditions.

Note You cannot use the Service Generic engine to create custom signatures.

Caution Due to the proprietary nature of this complex language, we do not recommend that you edit the Service Generic engine signature parameters other than severity and event action.

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

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Cisco Systems IPS4510K9 manual Service Generic Engine
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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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