password protection for RewriteRule

[dhaneshk k]

List;

I am using apache2.2    

I need to do a   password protected access to    a website   eg  www.mydomain.com


I have  this  Vhost configuration in   my  httpd-Vhost.conf    

<VirtualHost *:80>
ServerName  mydomain.com
RewriteEngine On
RewriteRule ^/(.*) http://127.0.0.1:8081/VirtualHostBase/http/www.mydomain.com:80/site1/VirtualHostRoot/$1 [L,P]
ErrorLog /var/log/apache/mysite.com/error_log
CustomLog /var/log/apache/mysite.com/access.log combined
</VirtualHost>Now anybody   in their  browse  type  www.mydomain.com  they  can view my site , but I want to     make them to enter a username  & password  to view the site .


How can  I do a    password protected   access to my site  for this  RewriteRule  based Vhost 

( I know that I can do   .htaccess & .htpasswd   based authentication for   directories in  apache . )

But for RewriteRule   is it possible ?  How ?


I appreciate  very much for your valuable  suggestions & hints  to how to do that .

Thanks in advance 
Dhanesh.

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