Nice tutorial on setting up an IRC server if you know nothing about IRC servers (or almost nothing)
via Raspberry Pi IRC Server.
Next challenge is to open up a port on the router, so the IRC server becomes reachable from the outside world.
I’m following this tutorial, with no success so far
http://www.howtogeek.com/66214/how-to-forward-ports-on-your-router/
I’m using this to see which ports are open/close
http://www.yougetsignal.com/tools/open-ports/
And now I’m off to read https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers to try and figure out what’s not working.
UPDATE: After realizing that there was a checkbox to check on my router’s interface, I can now say my IRC server test is functional!