DNP3_Data.Link.Layer.Function.NACK
Description
This indicates detection of the DNP3 Data Link Layer Function NACK. DNP3 (Distributed Network Protocol) is a set of communication protocols used between components in process automation systems. It is used primarily in utilities like electric or water companies. The communication is done between a master station and Remote Terminal Units (RTUs) or Intelligent Electronic Devices (IEDs). The signature detects the service function in the DNP3 data link layer.
Affected Products
DNP3
Impact
Unexpected network communication
Technology
Browser-Based, Network-Protocol, Client-Server, Peer-to-Peer, Cloud-Based, Mobile-Device
Behavior
- Reasonable
Default Ports
- TCP/20000