ZNC is an advanced IRC bouncer that is left connected so an IRC client can disconnect/reconnect without losing the chat session.
Install the package. The installation script will create a group and user znc. The default home directory for this user is
Generate ZNC config as user znc.
$ sudo -u znc znc --makeconf
Go through the wizard and setup your preferences.
Though you can choose to modify your configuration files manually, this requires shutting down the server first. Do not edit configuration files while ZNC is running.
If you enabled the web admin module, you can access it at
http://yourhostname:port, the znc port number is the same as you defined for connecting to the bouncer.
Control Panel Module
If you enabled the control panel module,
/msg *controlpanel help for a list of settings while you are connected to the server.