Password proetct pages in Apache

create a password encoded .httaccess file with

http://www.4webhelp.net/us/password.php
http://shop.alterlinks.com/htpasswd/htpasswd.php
http://www.htmlite.com/HTA006a.php

in form of user:encoded_password

then add the following to corerct section in httpd.conf file

AuthUserFile /full/path/to/.htaccess
AuthType Basic
AuthName "Authorization Required"
Require valid-user

restart apache