Appendix A System Architecture

MainApp

Figure A-3shows the transactionHandlerLoop method in the CtlTransSource.

Figure A-3

CtlTransSource

CtlTransSource

+CtlTransSource0 +transaction HandlerLoop

IDAPI

HTTP Client

119595

When the transactionHandlerLoop receives a remotely addressed transaction, it tries to forward the remote control transaction to its remote destination. The transactionHandlerLoop formats the transaction into a control transaction message. The transactionHandlerLoop uses the HttpClient classes to issue the control transaction request to the HTTP server on the remote node. The remote HTTP server handles the remote control transaction and returns the appropriate response message in an HTTP response. If the remote HTTP server is an IPS web server, the web server uses the CtlTransSource servlet to process the remote control transactions.

The transactionHandlerLoop returns either the response or a failure response as the response of the control transaction to the initiator of the remote control transaction. If the HTTP server returns an unauthorized status response (indicating the HTTP client has insufficient credentials on the HTTP server), the transactionHandlerLoop reissues the transaction request using the designated username and password of the CtlTransSource to authenticate the identity of the requestor. The transactionHandlerLoop continues to loop until it receives a control transaction that directs it to exit or until its exit event is signaled.

Attack Response Controller

This section describes the ARC, which is the IPS application that starts and stops blocking on routers, switches, and firewalls, and rate limits traffic on routers running Cisco IOS 12.3. A block is an entry in the configuration or ACL of a device to block incoming and outgoing traffic for a specific host IP address or network address. This section contains the following topics:

•Understanding the ARC, page A-13

•ARC Features, page A-14

•Supported Blocking Devices, page A-15

•ACLs and VACLs, page A-16

•Maintaining State Across Restarts, page A-16

•Connection-Based and Unconditional Blocking, page A-17

•Blocking with Cisco Firewalls, page A-18

•Blocking with Catalyst Switches, page A-19

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

A-12

OL-29168-01

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Cisco Systems IPS4510K9 manual Attack Response Controller, Figure A-3
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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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