Appendix C Troubleshooting

Gathering Information

Denied Attackers and hit count for each.

Denied Attackers with percent denied and hit count for each.

The Signature Database Statistics.

The Number of each type of node active in the system

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

The number of each type of node inserted since reset

Total nodes inserted = 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

The rate of nodes per second for each time since reset

Nodes per second = 0

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

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

IP nodes keyed on both IP addresses per second = 0

The number of root nodes forced to expire because of memory constraints

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

Packets dropped because they would exceed Database insertion rate limits = 0

Fragment Reassembly Unit Statistics for this Virtual Sensor

Number of fragments currently in FRU = 0

Number of datagrams currently in FRU = 0

Number of fragments received since reset = 0

Number of fragments forwarded since reset = 0

Number of fragments dropped since last reset = 0

Number of fragments modified since last reset = 0

Number of complete datagrams reassembled since last reset = 0

Fragments hitting too many fragments condition since last reset = 0

Number of overlapping fragments since last reset = 0

Number of Datagrams too big since last reset = 0

Number of overwriting fragments since last reset = 0

Number of Inital fragment missing since last reset = 0

Fragments hitting the max partial dgrams limit since last reset = 0

Fragments too small since last reset = 0

Too many fragments per dgram limit since last reset = 0

Number of datagram reassembly timeout since last reset = 0

Too many fragments claiming to be the last since last reset = 0

Fragments with bad fragment flags since last reset = 0

TCP Normalizer stage statistics

Packets Input =

0

Packets Modified = 0

Dropped packets

from queue = 0

Dropped packets

due to deny-connection = 0

Duplicate Packets = 0

Current Streams

= 0

Current Streams

Closed = 0

Current Streams

Closing = 0

Current Streams

Embryonic = 0

Current Streams

Established = 0

Current Streams

Denied = 0

Total SendAck Limited Packets = 0

Total SendAck Limited Streams = 0

Total SendAck Packets Sent = 0

Statistics for the TCP Stream Reassembly Unit

Current Statistics for the TCP Stream Reassembly Unit

 

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

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

 

 

 

 

 

OL-29168-01

 

 

C-91

 

 

 

 

 

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Cisco Systems IPS4510K9 manual 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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