Appendix E Troubleshooting

Gathering Information

TCP Packets currently queued for reassembly = 0

Cumulative Statistics for the TCP Stream Reassembly Unit since reset

TCP streams that have been tracked since last reset = 0

TCP streams that had a gap in the sequence jumped = 0

TCP streams that was abandoned due to a gap in the sequence = 0

TCP packets that arrived out of sequence order for their stream = 0

TCP packets that arrived out of state order for their stream = 0

The rate of TCP connections tracked per second since reset = 0

SigEvent Preliminary Stage Statistics

Number of Alerts received = 0

Number of Alerts Consumed by AlertInterval = 0

Number of Alerts Consumed by Event Count = 0

Number of FireOnce First Alerts = 0

Number of FireOnce Intermediate Alerts = 0

Number of Summary First Alerts = 0

Number of Summary Intermediate Alerts = 0

Number of Regular Summary Final Alerts = 0

Number of Global Summary Final Alerts = 0

Number of Active SigEventDataNodes = 0

Number of Alerts Output for further processing = 0

--MORE--

Step 17 Display the statistics for the web server.

sensor# show statistics web-server listener-443

session-11

remote host = 64.101.182.167 session is persistent = no

number of requests serviced on current connection = 1 last status code = 200

last request method = GET

last request URI = cgi-bin/sdee-server last protocol version = HTTP/1.1 session state = processingGetServlet

number of server session requests handled = 957134 number of server session requests rejected = 0

total HTTP requests handled = 365871

maximum number of session objects allowed = 40 number of idle allocated session objects = 12 number of busy allocated session objects = 1

summarized log messages

number of TCP socket failure messages logged = 0 number of TLS socket failure messages logged = 0 number of TLS protocol failure messages logged = 0 number of TLS connection failure messages logged = 595015 number of TLS crypto warning messages logged = 0

number of TLS expired certificate warning messages logged = 0

number of receipt of TLS fatal alert message messages logged = 594969 crypto library version = 6.2.1.0

sensor#

Step 18 Clear the statistics for an application, for example, the logging application. The statistics are retrieved and cleared.

sensor# show statistics logger clear

 

The number

of Log

interprocessor FIFO overruns = 0

 

The number

of syslog messages received = 141

 

The number

of <evError> events written to the event store by severity

 

Fatal Severity

= 0

 

 

 

 

Error Severity

= 14

 

 

 

 

Warning

Severity = 142

 

TOTAL =

156

 

 

 

 

 

The number

of log

messages written to the message log by severity

 

 

 

Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.1

 

 

 

 

 

 

 

 

OL-24002-01

 

 

 

E-99

 

 

 

 

 

 

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Cisco Systems IPS4520K9 manual Display the statistics for the web server, Sensor# show statistics web-server listener-443
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IPS4520K9 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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