Masked Redirection to password protected directory

[scorpion]

Are there any special precautions to take when redirecting to an external site where the directory is password protected? That is, what mod_rewrite will redirect to an external site's protected directory, thus popping up the authenticate window, AND the client's address bar always remains the URL of your site...

[Brett]

If you redirect to an external site, then the URL in the browser WON'T remain the URL of your own site.

You might be able to get around this using a redirect to a PHP script that uses cURL to pull the information from the other site.