If you want to restrict who can access your server you can add a set of restrictions as follows:
DENY 128.16.64.
ALLOW 128.16.
The default if you don't specify anything is equivalent to ALLOW
all. If you do add any restrictions, then the default becomes
DENY all, and you must explicitly enable access from particular sites.
Thus the above only allows access from machines with addresses `` 128.16. something. something'', with the
exception of machines with address `` 128.16.64. something''.