MODBUS/TCP 'Restart Communications' Function Code Detection (SCADA)

info Nessus Network Monitor Plugin ID 40

Description

The MODBUS/TCP client has sent a MODBUS server a Restart Communications request. The Restart Communications request, function code 8 (0x08) and subfunction code 1 (0x01), will cause the target server to reinitialize and restart its communication port. This function is typically implemented only in serial devices.

Plugin Details

Severity: Info

ID: 40

Family: SCADA