Chapter 14 Configuring Attack Response Controller for Blocking and Rate Limiting

Configuring Connection Blocking

Use the block network ip-address/netmask[timeout minutes] command in privileged EXEC mode to block a network. Use the no form of the command to remove a block on a network. You must have blocking configured before you can set up network blocks. You can also view a list of networks that are being blocked. If you do not configure the amount of time for the network block, it is permanent.

The following options apply:

•ip-address/netmask—Specifies the network subnet to be blocked in X.X.X.X/nn format, where X.X.X.X specifies the sensor IP address as a 32-bit address written as 4 octets separated by periods where X = 0-255, and nn specifies the number of bits (1032) in the netmask.

•minutes—(Optional) Specifies the duration of the network block in minutes. The valid range is 0 to 70560 minutes.

Blocking a Network

To block a network, follow these steps:

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

Step 2 Configure the network block for 15 minutes, for example. The network block ends in 15 minutes.

sensor# block network 192.0.2.0/24 timeout 15

Step 3 Start a network block. The network block lasts until you remove it.

sensor# block network 192.0.2.0/24

Step 4 End the network block.

sensor# no block network 192.0.2.0/24

sensor#

Configuring Connection Blocking

Note Connection blocks and network blocks are not supported on adaptive security appliances. Adaptive security appliances only support host blocks with additional connection information.

Use the block connection source-ip-address destination-ip-address [port port-number] [protocol type] [timeout minutes] command in privileged EXEC mode to block a connection between two IP addresses. Use the no form of the command to remove the connection block. You must have blocking configured before you can set up connection blocks. You can also view a list of connections that are being blocked. If you do not configure the amount of time for the connection block, it is permanent.

The following options apply:

•source-ip-address—Specifies the source IP address in a connection block.

•destination-ip-address—Specifies the destination IP address in a connection block.

•port-number—(Optional) Specifies the destination port number. The valid range is 0 to 65535.

•type—(Optional) Specifies the protocol type. The valid types are tcp or udp.

•minutes—(Optional) Specifies the duration of the connection block in minutes. The valid range is 0 to 70560 minutes.

 

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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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