Appendix B Signature Engines

Service Engines

Service SMB Advanced Engine

Note The SMB engine has been replaced by the SMB Advanced engine. Even though the SMB engine is still visible in IDM, IME, and the CLI, its signatures have been obsoleted; that is, the new signatures have the obsoletes parameter set with the IDs of their corresponding old signatures. Use the new SMB Advanced engine to rewrite any custom signature that were in the SMB engine.

The Service SMB Advanced engine processes Microsoft SMB and Microsoft RPC over SMB packets. The Service SMB Advanced engine uses the same decoding method for connection-oriented MSRPC as the MSRPC engine with the requirement that the MSRPC packet must be over the SMB protocol. The Service SMB Advanced engine supports MSRPC over SMB on TCP ports 139 and 445. It uses a copy of the connection-oriented DCS/RPC code from the MSRPC engine.

Table B-28lists the parameters specific to the Service SMB Advanced engine.

Table B-28

Service SMB Advanced Engine Parameters

 

 

 

 

 

Parameter

 

Description

Value

 

 

 

 

service-ports

 

Specifies a comma-separated list of ports or

0 to 65535

 

 

port ranges where the target service resides.

a-b[,c-d] 1

specify-smb-command {yes

(Optional) Enables SMB commands:

0 to 255

no}

 

• smb-command—Specifies the SMB

 

 

 

 

 

 

 

command value.

 

 

 

Note Exact match required; defines the

 

 

 

 

SMB packet type.2

 

specify-direction {yes no}

(Optional) Enables traffic direction:

from service

 

 

• direction—Specifies the direction of

to service

 

 

 

traffic:

 

 

 

 

– from service—Traffic from service

 

 

 

 

port destined to client port.

 

 

 

 

– to service—Traffic from client port

 

 

 

 

destined to service port.

 

 

 

 

specify-msrpc-over-smb-op

(Optional) Enables MSRPC over SMB:

0 to 65535

eration {yes no}

• msrpc-over-smb-operation—Specifies

 

 

 

 

 

 

 

MSRPC over SMB.

 

 

 

Note

Required for

 

 

 

 

SMB_COM_TRANSACTION

 

 

 

 

commands, exact match required.

 

 

 

 

specify-regex-string {yes

(Optional) Enables searching for Regex

string

no}

 

strings:

 

 

 

•

regex-string—Specifies a regular

 

 

 

 

expression to search for in a single TCP

 

 

 

 

packet.

 

 

 

 

 

 

 

 

Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2

 

 

 

 

 

 

 

OL-29168-01

 

 

B-55

 

 

 

 

 

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Cisco Systems IPS4510K9 manual Service SMB Advanced Engine, Smbcomtransaction
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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.

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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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