Syntax: ALLOW <site>
BAN <site> <newbies|all|permit>
BAN <site> prohibits players from that site from logging in. BAN with
no arguments lists the banned sites. ALLOW <site> removes a site from
the BAN list, if the remover is of equal or higher LEVEL than the banner.
A site may have all players, new players, or non-permitted players (set
by editing the player file) banned, by changing the argument after the site.
*s may be used to BAN either by suffix (*.edu), prefix (labmac*), or
content (*andrews*), but be careful not to accidently LOCK out too many
sites with a wildcard. Bans do not SAVE unless the PERMBAN command is used.