| ID | 40040 | |||||||||
| Released | Feb 05, 2015 | |||||||||
| Updated | Nov 21, 2023 | |||||||||
| Category | Industrial | |||||||||
| Risk | 
|
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| Popularity | 
|
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| SSL Deep Inspection | No | |||||||||
| Language | N/A | |||||||||
| Deprecated | No | |||||||||
| Technology | Browser-Based, Network-Protocol, Client-Server, Peer-to-Peer, Cloud-Based, Mobile-Device | |||||||||
| Behavior |
Reasonable |
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| Default Ports |
TCP/502 |
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Application DependenciesModbusUpdate History
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Client Application Firewall
Modbus_Exception.Acknowledge.Delay
Description
This indicates detection of the Modbus Acknowledge Exception command.Modbus Protocol is a messaging structure developed by Modicon in 1979. It is used to establish master-slave/client-server communication between intelligent devices.
Affected Products
Modbus protocol
Impact
Unexpected network communication