Exposing serial port to the internet
Hi!
Are there recommendations on exposing serial ports from an AC800M controller (COM3 or CI853) to public internet using a Cellular Router?
What are the risks regarding security or resilience?
BR
Are there recommendations on exposing serial ports from an AC800M controller (COM3 or CI853) to public internet using a Cellular Router?
What are the risks regarding security or resilience?
BR
Asked 3 months ago
Answers
0
Hi,
You mentioned about the Serial port (COM3 or CI853) that is used for Modbus protocol.
The internet is another protocol. So in my opinion, there are no risk can touch. Or I don't know any way to expose directly this port to TCP/IP without Gateway device.
You mentioned about the Serial port (COM3 or CI853) that is used for Modbus protocol.
The internet is another protocol. So in my opinion, there are no risk can touch. Or I don't know any way to expose directly this port to TCP/IP without Gateway device.
Answered 3 months ago
0
Hi,
I have worked on Serial over Ethernet solutions some years before.
As mentioned, the solution is all about only converting the interface, just converts serial into Ethernet. Either the side the communication protocol here modbus remains same. Ultimately you are going to receive/send same modbus packets, so that should not be a problem in terms of controller load or performance. But definitely from security point of view we have to add more gates like password protection or allowable IP configuration from Master Public Internet side.
I have worked on Serial over Ethernet solutions some years before.
As mentioned, the solution is all about only converting the interface, just converts serial into Ethernet. Either the side the communication protocol here modbus remains same. Ultimately you are going to receive/send same modbus packets, so that should not be a problem in terms of controller load or performance. But definitely from security point of view we have to add more gates like password protection or allowable IP configuration from Master Public Internet side.
Answered 3 months ago
by kstoilov
AFAIK you can't secure the serial ports, at least the protocols used (read somewhere about that). But still if you are using a router, you can take the security measures there e.g. restrict the unwanted connections.
It would be an interesting for me too to see the other comments.
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