IRC

To properly enumerate IRC, there is this application called HexChat that you can install with a simple:

apt install hexchat

This application allows you to enter the IRC Chats through the use of different channels.

First thing we do is add a new network which we can call whatever we want. In my case I named it UT99.

Second we add the IP address and the port Number of the IRC service. In our case it was anywhere from 6630 - 7007.

Upon connection we enumerate channels that we can chat on. In the bottom of the screenshot below we click on Download list, different channels should appear as a result.

We see that daisy is telling us that the game they are playing is Unreal Tournament 99 and the port is 7778.