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Modbus TCP/IP and Proxy
How does the Modbus TCP/IP work when the ports used are disabled? can it use a proxy to go through that?


I am working on a modbus TCP/IP client (studying it), and i have an issue for the Modbus client/server connection.

Suppose the client communicate using the port 1050, and the server listens to port 502, and there's a router between them. what if in the router blocks the port 1050 or 502 or both?

Can the client use a proxy to avoid using the port 1050?

Is there a solution to avoid the firewall blockage also?

I'm trying to figure out the cases where the connection can't be made, if you see other cases please let me know.