how to set up a slave controller?

[astrogerard]

Running programs as a non-root user is a (very) good practice. But a non privileged user is by default not allowed to start a socket on the lower ports like 80 or 443. Another good practice is to run a non privileged program on a higher port (e.g. 8080) and use a rev proxy (HAproxy, Squid, Apache2, NGinx etc.) for (SSL/TLS) offloading and adding a little more security.

--Gerard