Chapter 7 Defining Signatures

Configuring Signatures

Configuring IP Logging

You can configure a sensor to generate an IP session log when the sensor detects an attack. When IP logging is configured as a response action for a signature and the signature is triggered, all packets to and from the source address of the alert are logged for a specified period of time.

Note IP logging allows a maximum limit of 20 concurrent IP log files. Once the limit of 20 is reached, you

receive the following message in main.log: Cid/W errWarnIpLogProcessor::addIpLog: Ran out of file descriptors.

Use the ip-logcommand in the signature definition submode to configure IP logging.

The following options apply:

ip-log-bytes—Identifies the maximum number of bytes you want logged. The valid value is 0 to 2147483647. The default is 0.

ip-log-packets—Identifies the number of packets you want logged. The valid value is 0 to 65535. The default is 0.

ip-log-time—Identifies the duration you want the sensor to log. The valid value is 30 to 300 seconds. The default is 30 seconds.

Note When the sensor meets any one of the IP logging conditions, it stops IP logging.

Configuring IP Logging Parameters

To configure the IP logging parameters, follow these steps:

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

Step 2 Enter IP log submode.

sensor# configure terminal

sensor(config)# service signature-definition sig1

sensor(config-sig)# ip-log

Step 3 Specify the IP logging parameters:

a.Specify the maximum number of bytes you want logged.

sensor(config-sig-ip)# ip-log-bytes 200000

b.Specify the number of packets you want logged.

sensor(config-sig-ip)# ip-log-packets 150

c.Specify the length of time you want the sensor to log.

sensor(config-sig-ip)# ip-log-time 60

 

Step 4

Verify the settings.

 

 

sensor(config-sig-ip)# show settings

 

 

ip-log

 

 

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

 

 

 

 

 

ip-log-packets: 150 default: 0

 

 

ip-log-time: 60 default: 30

 

 

ip-log-bytes: 200000 default: 0

 

 

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Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

 

 

 

 

 

 

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Cisco Systems IPS4510K9 manual Configuring IP Logging Parameters, Specify the number of packets you want logged

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.