AuthType Basic
AuthName "Password Required"
AuthUserFile /usr/local/password/passwd.file
Require user <username>

##</code><code>##

htpasswd -c /usr/local/password/passwd.file <username>

##</code><code>##

<virtualHost>
ServerName  www.xyz.com
DocumentRoot <root-Dir> 
AccessFileName .htaccess_www.xyz.com
</virtualHost>