How to password restrict web pages

There's two decent ways I can recommend off hand. One is if the web server being used is Apache, it can be setup using a .htaccess file. Here's a decent enough tutorial on that. and another decent one.

Second way is with a PHP script like this one. Though it's more for password protecting a page and isn't so good for protecting a directory. So it'll depend on your needs. Most will recommend the .htaccess way though as it's more secure and reliable.

 

No, it won't. For that you'll want to add meta tags the individual pages. Bad robots may ignore it, but can't really get around that, but shouldn't be an issue, especially once you put password protection into place.

 

To do everything you can to stop web crawlers, in addition to meta tags in the page you should look into a robots.txt file on your site as well.
robots.txt