The official Wesnoth servers can be moderated via IRC from the moderator IRC channel - which you know the location of if you are a moderator.
Administration via IRC
Server administration commands are accessed via IRC by directing them to the lobby bot rather than using "/query" as is done on the server. For an action on the stable server direct commands to "lobby: ", and for the development server "lobby: !dev: " and for the previous stable server "lobby: !oldstable: "
lobby: /kick <mask> [<reason>]
kicks a user from the stable server.
all commands are prefixed by "lobby: " or "lobby: !dev: "
<text> sends a message to all server admins on the server (same as the adminmsg command). /msg <text> sends a message to all users on the server, even if they are in a game. /lobbymsg <text> sends a message to all users in the lobby. /pm <nick> <text> sends a private message to a user.
- ServerAdministration for admin commands