Appendix C Troubleshooting

Gathering Information

Note The clear option is not available for the analysis engine, anomaly detection, host, network access, or OS identification applications.

For the IPS 4510 and IPS 4520, at the end of the command output, there are extra details for the Ethernet controller statistics, such as the total number of packets received at the Ethernet controller, the total number of packets dropped at the Ethernet controller under high load conditions, and the total packets transmitted including the customer traffic packets and the internal keepalive packet count.

Note The Ethernet controller statistics are polled at an interval of 5 seconds from the hardware side. The keepalives are sent or updated at an interval of 10 ms. Because of this, there may be a disparity in the actual count reflected in the total packets transmitted. At times, it is even possible that the total packets transmitted may be less that the keepalive packets transmitted.

To display statistics for the sensor, follow these steps:

 

 

 

Step 1

Log in to the CLI.

 

 

 

 

 

 

 

Step 2

Display the statistics for the Analysis Engine.

 

 

 

 

sensor# show statistics analysis-engine

 

 

 

 

Analysis Engine Statistics

 

 

 

 

 

 

 

Number of seconds since service

started = 431157

 

 

 

 

Processing Load

Percentage

 

 

 

 

 

 

Thread

5 sec

1 min

5 min

 

 

 

 

0

1

1

1

 

 

 

 

 

1

1

1

1

 

 

 

 

 

2

1

1

1

 

 

 

 

 

3

1

1

1

 

 

 

 

 

4

1

1

1

 

 

 

 

 

5

1

1

1

 

 

 

 

 

6

1

1

1

 

 

 

 

 

Average

1

1

1

 

 

 

 

 

The rate of TCP

connections tracked per second = 0

 

 

 

 

The rate of packets per second = 0

 

 

 

 

The rate of bytes per second = 0

 

 

 

 

 

 

Receiver Statistics

 

 

 

 

 

 

 

Total number

of packets processed since reset = 0

 

 

 

 

Total number

of IP packets processed since reset = 0

 

 

 

 

Transmitter Statistics

 

 

 

 

 

 

 

Total number

of packets transmitted = 133698

 

 

 

 

Total number

of packets denied = 203

 

 

 

 

Total number

of packets reset = 3

 

 

 

 

Fragment Reassembly Unit Statistics

 

 

 

 

Number of fragments currently in FRU = 0

 

 

 

 

Number of datagrams currently in FRU = 0

 

 

 

 

TCP Stream Reassembly Unit Statistics

 

 

 

 

TCP streams currently in the

embryonic state = 0

 

 

 

 

TCP streams currently in the

established state = 0

 

 

 

 

TCP streams currently in the

closing state = 0

 

 

 

 

TCP streams currently in the

system = 0

 

 

 

 

TCP Packets currently queued

for reassembly = 0

 

 

 

 

The Signature Database Statistics.

 

 

 

 

Total nodes active = 0

 

 

 

 

 

 

TCP nodes keyed on both IP addresses and both ports = 0

 

 

 

 

UDP nodes keyed on both IP addresses and both ports = 0

 

 

 

 

IP nodes keyed on both IP addresses = 0

 

 

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

 

 

 

 

C-82

 

 

 

 

 

OL-29168-01

 

 

 

 

 

 

 

 

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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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