make
./ircserv [PORT] [PASSWORD]
You can choose ready irc client for client. KVIRC will be the best of them. You can also connect with netcat (nc).
nc [IP] [PORT];
HELP
JOIN [#CHANNEL]
PRIVMSG [#CHANNEL] : [MESSAGE]
PRIVMSG [NICK] : [MESSAGE]
KICK [#CHANNEL] [NICK]
NOTICE [#CHANNEL] : [MESSAGE]
QUIT