Chapter 14 Configuring Attack Response Controller for Blocking and Rate Limiting

Configuring Blocking and Rate Limiting Devices

Routers and ACLs

Note Pre-Block and Post-Block ACLS do not apply to rate limiting.

You create and save Pre-Block and Post-Block ACLs in your router configuration. These ACLs must be extended IP ACLs, either named or numbered. See your router documentation for more information on creating ACLs. Enter the names of these ACLs that are already configured on your router in the Pre-Block ACL and Post-Block ACL fields.

The Pre-Block ACL is mainly used for permitting what you do not want the sensor to ever block. When a packet is checked against the ACL, the first line that gets matched determines the action. If the first line matched is a permit line from the Pre-Block ACL, the packet is permitted even though there may be a deny line (from an automatic block) listed later in the ACL. The Pre-Block ACL can override the deny lines resulting from the blocks.

The Post-Block ACL is best used for additional blocking or permitting that you want to occur on the same interface or direction. If you have an existing ACL on the interface or direction that the sensor will manage, that existing ACL can be used as a Post-Block ACL. If you do not have a Post-Block ACL, the sensor inserts permit ip any any at the end of the new ACL.

When the sensor starts up, it reads the contents of the two ACLs. It creates a third ACL with the following entries:

•A permit line for the sensor IP address

•Copies of all configuration lines of the Pre-Block ACL

•A deny line for each address being blocked by the sensor

•Copies of all configuration lines of the Post-Block ACL

The sensor applies the new ACL to the interface and direction that you designate.

Note When the new ACL is applied to an interface or direction of the router, it removes the application of any other ACL to that interface or direction.

Configuring the Sensor to Manage Cisco Routers

To configure a sensor to manage a Cisco router to perform blocking and rate limiting, follow these steps:

Step 1 Log in to the CLI using an account with administrator privileges.

Step 2 Enter network access submode.

sensor# configure terminal

sensor(config)# service network-access

sensor(config-net)#

Step 3 Specify the IP address for the router controlled by the ARC.

sensor(config-net)# router-devicesip_address

Step 4 Enter the logical device name that you created when you configured the user profile. The ARC accepts anything you enter. It does not check to see if the user profile exists.

sensor(config-net-rou)# profile-nameuser_profile_name

 

 

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Cisco Systems IPS4510K9 manual Routers and ACLs, Specify the IP address for the router controlled by the ARC, 14-23
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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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