Threat Level: green Handler on Duty: Rob VandenBrink

SANS ISC TCP/UDP Port Activity


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Sources
Targets
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Port Information
Protocol Service Name
tcp asa-appl-proto
udp asa-appl-proto
TCP [ICS] Modbus TCP [ICS] Modbus TCP
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User Comments
Submitted By Date
Comment
Marcus H. Sachs 2007-05-08 13:43:16
This port (tcp/502) is used for the Modbus over TCP protocol. See http://www.modbus.org/docs/Modbus_Messaging_Implementation_Guide_V1_0b.pdf for more details on this protocol.
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