The Visibility area of the Publish metabox gives you the option to make a page public, password protected, or completely private.

- Public – The page will be visible to everyone.
- Protected – The page is protected with a password you set. Only people who have the password can view a protected page.
- Private – Pages are only visible to blog Editors and Administrators. Private pages are not visible in feeds or in any search. A page can be private without being password protected.
Here’s an example of how to set a password protected page:

WordPress will prompt you for the password on your initial visit to a protected page. After entering the password that first time, we’ll securely store the password with the browser you viewed it with so you won’t have to enter it again.
Private Blog
If you’d like to make your entire blog private, you’ll need to adjust your Privacy Settings.