SECURITY SET JOINUNMANAGED

Usage: SECURITY SET JOINUNMANAGED [NONE|IRC|JAVA|BOTH]

If enabled this command limits clients from joining channels that do not have any channel operators (+o clients) in them.

NONE - Don't allow any clients to join unmanaged channels.
IRC - Only allow IRC clients to join unmanaged channels.
JAVA - Only allow Java clients to join unmanaged channels.
BOTH - Allow both client types to join unmanaged channels.

Examples:
/as security set joinunmananaged irc
/as security set joinunmananaged java
/as security set joinunmananaged both

This mode can lead to reduced server abuse by drones and other types of malicious clients. See also security set joinunregistered