Appendix B Signature Engines

State Engine

Table B-32lists the parameters specific to the State engine.

Table B-32

State Engine Parameters

 

 

 

 

 

Parameter

 

Description

Value

 

 

 

 

state-machine

 

Specifies the state machine grouping.

cisco-login

 

 

 

 

lpr-format-string

 

 

 

 

smpt

 

 

 

 

cisco-login

 

Specifies the state machine for Cisco login:

cisco-device

 

 

state-name—Name of the state required before the

control-c

 

 

signature fires an alert:

pass-prompt

 

 

 

 

 

 

Cisco device state

start

 

 

 

 

 

 

Control-C state

 

 

 

Password prompt state

 

 

 

Start state

 

 

 

 

lpr-format-string

Specifies the state machine to inspect for the LPR

abort

 

 

format string vulnerability:

format-char

 

 

 

 

 

 

state-name—Name of the state required before the

start

 

 

signature fires an alert:

 

 

 

Abort state to end LPR Format String

 

 

 

 

inspection

 

 

 

Format character state

 

 

 

State state

 

 

 

 

 

smpt

 

Specifies the state machine for the SMTP protocol:

abort

 

 

state-name—Name of the state required before the

mail-body

 

 

signature fires an alert:

mail-header

 

 

 

 

 

 

Abort state to end LPR Format String

smtp-commands

 

 

 

inspection

 

 

 

start

 

 

Mail body state

 

 

 

 

 

Mail header state

 

 

 

SMTP commands state

 

 

 

Start state

 

 

 

 

specify-min-match-

(Optional) Enables minimum match length:

0 to 65535

length {yes no}

min-match-length—Specifies the minimum

 

 

 

 

 

 

number of bytes the regular expression string must

 

 

 

match.

 

 

 

 

 

regex-string

 

Specifies the regular expression to search for.

string

 

 

Note This parameter is protected; you cannot edit it.

 

 

 

 

 

 

 

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

 

 

 

 

 

 

 

OL-29168-01

 

 

B-61

 

 

 

 

 

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Cisco Systems IPS4510K9 manual Table B-32lists the parameters specific to the State engine

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.

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