Chapter 11 Configuring External Product Interfaces

Adding External Product Interfaces and Posture ACLs

Step 9 (Optional) Allow the host posture information from unreachable hosts to be passed from the external product to the sensor.

sensor(config-ext-cis-hos)#allow-unreachable-postures yes

Note A host is not reachable if the CSA MC cannot establish a connection with the host on any of the IP addresses in the host’s posture. This option is useful in filtering the postures whose IP addresses may not be visible to the IPS or may be duplicated across the network. This filter is most applicable in network topologies where hosts that are not reachable by the CSA MC are also not reachable by the IPS, for example if the IPS and the CSA MC are on the same network segment.

Step 10 Configure a posture ACL:

a.Add the posture ACL into the ACL list.

sensor(config-ext-cis-hos)#posture-acls insert name1 begin

sensor(config-ext-cis-hos-pos)#

Note Posture ACLs are network address ranges for which host postures are allowed or denied. Use posture ACLs to filter postures that have IP addresses that may not be visible to the IPS or may be duplicated across the network.

b.Enter the network address the posture ACL will use.

sensor(config-ext-cis-hos-pos)# network-address 192.0.2.0/24

c.Choose the action (deny or permit) the posture ACL will take.

sensor(config-ext-cis-hos-pos)# action permit

Step 11 Verify the settings.

sensor(config-ext-cis-hos-pos)# exit sensor(config-ext-cis-hos)# exit sensor(config-ext-cis)# exit sensor(config-ext)# show settings

cisco-security-agents-mc-settings (min: 0, max: 2, current: 1)

-----------------------------------------------

ip-address: 209.165.200.225

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interface-type: extended-sdee <protected>

enabled: yes default: yes

url: /csamc50/sdee-server <protected>

port: 80 default: 443 use-ssl

-----------------------------------------------

always-yes: yes <protected>

-----------------------------------------------

username: jsmith

password: <hidden> host-posture-settings

-----------------------------------------------

 

 

enabled: yes default: yes

 

 

allow-unreachable-postures: yes default: yes

 

 

posture-acls (ordered min: 0, max: 10, current: 1 - 1 active, 0 inactive)

 

 

-----------------------------------------------

 

 

 

 

 

ACTIVE list-contents

 

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

 

 

 

 

 

 

OL-29168-01

 

 

11-7

 

 

 

 

 

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Cisco Systems IPS4510K9 manual Enter the network address the posture ACL will use, 11-7
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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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