Require Login to View the Site
Makes the whole front end private: visitors who are not logged in are sent to the login page and returned to the page they asked for afterwards.
Snippet Library
Redirects snippets for WordPress
Snippets that send visitors where they should go: redirect after login or logout, from attachment pages, old URLs and empty searches, or to a maintenance page. Quick fixes when you only need a few redirects, not a redirection plugin.