For WordPress sites needing an hidden login without using a page link. Simply type your desired login URL such as http://www.mywebsite.com/login or http://www.mywebsite.com/logout to access the login or logout pages. The login value, login redirect page and the logout value are all fully editable within the options page. This plugin makes use of your .htaccess file using 301 redirects. Your .htaccess file will need to be writable for automated use.
Free Download: Download this wp-plugin