Sonicwall Signatures

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  Modbus -- Client Request (Inbound)

Category: PROTOCOLS      

Application: Modbus      

Modbus is a serial communications protocol for use with programmable logic controllers (PLCs). It has become a de facto standard communications protocol in industry, and is now the most commonly available means of connecting industrial electronic devices.

Versions of the Modbus protocol exist for serial port and for Ethernet and other networks that support the Internet protocol suite.

This SonicWALL signature identifies legitimate Modbus TCP-based traffic.

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