CyberCertPrepOT Security FundamentalsOT Fundamentals: Network Architecture & ProtocolsMEDIUMFree question
A serial-to-Ethernet converter exposes a Modbus RTU loop of 14 slaves on TCP 502 to the business network. Which risk does this create?
- A.Slave addresses get randomized at each poll breaking the loop
- B.The RS-485 bus turns unidirectional blocking the master writes
- C.Any host reaching the converter can read or write the slaves
- D.The converter encrypts the traffic leaving the historian blind
Why C is correct
A protocol converter turns an isolated serial bus into an IP-reachable one while adding no authentication. Whoever can open a TCP session can issue reads and writes to every slave behind it.
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