Linux robot communication error - Unable to reach controller, error message communication error

Document ID : KB000034342
Last Modified Date : 09/03/2018
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Introduction:
Some Linux environments have trouble auto-detecting the local IP which causes problems with probes listening for incoming connections.
Instructions:
The first thing to try is to manually set the specific hostname and IP address in the robot.cfg file under /opt/nimsoft directory.

Leave all defaults in place except the following three lines:
...
robotname = ?set this to the computer hostname (shortname)
robotip = set this to the local/internal IP address of the machine
first_probe_port = 48003

Also, it is important to note that the local firewall may play a role here; generally speaking you should open ports 48000-48100 on any Nimsoft Robot, allowing connections from all other machines on the local network.