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  • Can you add a simple diagram? When you only have one port, do you plug it into the switch or the main PC, and does the main PC have two ports? You will not need NAT or port forwarding if the other computers don't connect directly to the measurement devices.
    – Cpt.Whale
    Commented Oct 18, 2023 at 18:10
  • Thank you for your reply. I'll add a diagram later, but to clarify, the issue is not really having only one port available (that would be solvable using a switch), the issue is having only one LAN IP address available for the main computer + X measuring devices (there's no DHCP, and all IPs are manually assigned). At the moment when that happens the data is just dumped to a file on the main computer and then that file is sent to the other computers via e-mail, pen drive, sd card, etc. Commented Oct 19, 2023 at 12:03
  • If the measurement devices don't need to connect out to the internet/*through* the main PC, then you can just assign them to any private network IP like 172.17.0.X. Give the main PC an additional IP in the same subnet, and they'll be able to communicate directly just fine without additional configuration
    – Cpt.Whale
    Commented Oct 19, 2023 at 14:06