Appendix B Signature Engines

Trojan Engines

Table B-40lists the parameters specific to the Traffic ICMP engine.

Table B-40

Traffic ICMP Engine Parameters

 

 

 

 

 

Parameter

 

Description

Value

 

 

 

parameter-tunable-sig

Specifies the whether this signature has

yes no

 

 

configurable parameters.

 

 

 

 

inspection-typee

Specifies the type of inspection to perform:

is-loki

 

 

• Inspects for original LOKI traffic

is-mod-lok

 

 

• Inspects for modified LOKI traffic

 

 

 

 

 

reply-ratio

 

Specifies the imbalance of replies to requests. The

0 to 65535

 

 

alert fires when there are this many more replies

 

 

 

than requests.

 

 

 

 

 

want-request

 

Requires an ECHO REQUEST be seen before firing

true false

 

 

the alert.

 

 

 

 

 

For More Information

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

Trojan Engines

The Trojan engines analyze nonstandard protocols, such as BO2K and TFN2K. There are three Trojan engines: Trojan BO2K, TrojanTFN2K, and Trojan UDP.

BO was the original Windows back door Trojan that ran over UDP only. It was soon superseded by BO2K. BO2K supported UDP and TCP both with basic XOR encryption. They have plain BO headers that have certain cross-packet characteristics.

BO2K also has a stealthy TCP module that was designed to encrypt the BO header and make the cross-packet patterns nearly unrecognizable. The UDP modes of BO and BO2K are handled by the Trojan UDP engine. The TCP modes are handled by the Trojan BO2K engine.

Note There are no specific parameters to the Trojan engines, except for swap-attacker-victim in the Trojan UDP engine.

For More Information

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

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

B-74

OL-29168-01

Page 683 Page 685
Page 684
Image 684
Cisco Systems IPS4510K9 manual Trojan Engines, Parameter Description Value
Page 683 Page 685

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.
Top Page Image Contents