SECURITY SET ALLOW-NULL-REALNAME

Usage: SECURITY SET ALLOW-NULL-REALNAME <false|true>

When true all users must have a real-name set or will not allow them on the server.

Example:
/as security set allow-null-realname false
/as security set allow-null-realname true

Many clone scripts do not use the real-name field and this is just one more way to lock down your server.