@SYNTAX:ban@

Bans the specified nick or userhost mask.

If nick is given as parameter, the ban type is used to generate the ban
mask. /SET ban_type specified the default ban type. Ban type is one of
the following:

    Normal - *!user@*.domain.net
    Host   - *!*@host.domain.net
    Domain - *!*@*.domain.net
    Custom [nick] [user] [host] [domain]

Examples:
    /BAN looser    - This bans the nick 'looser'
    /BAN *!*@*.org - This bans all the users coming from any 
                     .org domain.

    /SET ban_type custom nick domain - nick!*@*.domain.net
    /SET ban_type custom user host   - *!user@host.domain.net

See also: KNOCKOUT, KICKBAN