Appendix B Signature Engines

Service Engines

Table B-21lists parameters specific to the Service H225 engine.

Table B-21

Service H.225 Engine Parameters

 

 

 

 

 

Parameter

 

Description

Value

 

 

 

 

message-type

 

Specifies the type of H225 message to which the

asn.1-per

 

 

signature applies:

q.931

 

 

 

 

 

 

SETUP

setup

 

 

 

 

 

 

ASN.1-PER

tpkt

 

 

 

 

 

 

Q.931

 

 

 

TPKT

 

 

 

 

 

policy-type

 

Specifies the type of H225 policy to which the

length

 

 

signature applies:

presence

 

 

 

 

 

 

Inspects field length.

regex

 

 

 

 

 

 

Inspects presence.

validate

 

 

 

 

 

 

 

If certain fields are present in the message, an

value

 

 

 

alert is sent.

 

 

 

Inspects regular expressions.

 

 

 

Inspects field validations.

 

 

 

Inspects values.

 

 

 

Note Regex and presence are not valid for

 

 

 

 

TPKT signatures.

 

 

 

 

specify-field-name {yes

(Optional) Enables field name for use. Gives a

1 to 512

no}

 

dotted representation of the field name to which

 

 

 

this signature applies.

 

 

 

field-name—Specifies the field name to

 

 

 

 

inspect.

 

 

 

Note Only valid for SETUP and Q.931 message

 

 

 

 

types.

 

 

 

 

specify-invalid-packet-index

(Optional) Enables invalid packet index for use

0 to 255

{yes no}

 

for specific errors in ASN, TPKT, and other errors

 

 

 

that have fixed mapping.

 

 

 

invalid-packet-index—Specifies the

 

 

 

 

inspection for invalid packet index.

 

 

 

 

 

 

 

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

 

 

 

 

 

 

 

OL-29168-01

 

 

B-45

 

 

 

 

 

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Cisco Systems IPS4510K9 manual Setup, ASN.1-PER, Tpkt

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.

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