Apache:htaccess Order, Allow, and Deny

htaccess-order-deny-allow-deny
htaccess-order-deny-allow-deny
htaccess-order-deny-allow-deny
htaccess-order-deny-allow-deny

Order, Allow, and Deny

Allow from

 allow from host host ...
 Directory, .htaccess 

The allow directive controls access to a directory. The argument host can be one of the following:
all
All hosts are allowed access.
A (partial) domain name
All hosts whose names match or end in this string are allowed access.
A full IP address
The first one to three bytes of an IP address, for subnet restriction.