Chapter 14 Configuring Attack Response Controller for Blocking and Rate Limiting

Disabling Blocking

Step 6 Disable ACL logging by using the false keyword.

sensor(config-net-gen)# enable-acl-logging false

Step 7 Verify that ACL logging is disabled.

sensor(config-net-gen)# show settings general

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log-all-block-events-and-errors: true <defaulted>

enable-nvram-write: false <defaulted>

enable-acl-logging: false default: false

allow-sensor-block: false <defaulted>

block-enable: true <defaulted>

block-max-entries: 250 <defaulted>

max-interfaces: 250 <defaulted>

master-blocking-sensors (min: 0, max: 100, current: 0)

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Step 8 Exit network access mode.

sensor(config-net-gen)# exit sensor(config-net)# exit Apply Changes:?[yes]:

Step 9 Press Enter to apply the changes or enter no to discard them.

Enabling Writing to NVRAM

Use the enable-nvram-write {true false} command to configure the sensor to have the router write to NVRAM when ARC first connects. If enable-nvram-write is enabled, NVRAM is written each time the ACLs are updated. The default is disabled.

Enabling NVRAM writing ensures that all changes for blocking are written to NVRAM. If the router is rebooted, the correct blocks will still be active. If NVRAM writing is disabled, a short time without blocking occurs after a router reboot. And not enabling NVRAM writing increases the life of the NVRAM and decreases the time for new blocks to be configured.

To enable writing to NVRAM, 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 Enter general submode.

sensor(config-net)# general

Step 4 Enable writing to NVRAM.

sensor(config-net-gen)# enable-nvram-write true

Step 5 Verify that writing to NVRAM is enabled.

sensor(config-net-gen)# show settings

 

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

 

 

 

 

 

 

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Cisco Systems IPS4510K9 manual Enabling Writing to Nvram, 14-15

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.

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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.