Ruurd de Wind

What you can expect from this plugin:
<ul>
<li>When this plugin is active, your website can not be crawled or visited without loggin in first.</li>
<li>When you are running an environment that needs to be shielded from the outside, this could be the solution.</li>
<li>When this plugin is deactivated it does not leave any file or data behind.</li>
<li>Clean, fast and safe solution for redirecting your visitors to the standard WordPress login screen.</li>
</ul>

Login First

This plugin makes users login first before they can see your website. Real handy when you are developing a site or just want to to shield it from sear …

Functions:
<ul>
<li>Simple LogIn (one click)</li>
<li>Simple LogOut (one click)</li>
<li>Create user automatically</li>
<li>Update user’s profile with the informations that came from Identity Provider</li>
<li>Protect the user’s profile, that the user can’t modificate the informations that came from Identity Provider</li>
<li>Syncronize the LogIn and LogOut actions between the WordPress and the Identity Provider </li>
<li>If the (Apache) agent have a long update period you can choose what to do the plugin: go to login URL or LogIn.</li>
<li>SSL support</li>
<li>Rules: If a regular expression match to the $_SERVER variable’s element put the user to the group.</li>
<li>Plus plugin: Simple Group Manager – Manage the user’s groups and the group’s roles.</li>
<li>Admin page: Users / SSO Autentikáció</li>
</ul>
For more infromation please read this: http://kir-dev.sch.bme.hu/wp-opensso
If you don’t now how it’s work: https://redmine.kirdev.sch.bme.hu:8081/wiki/wordpress/OpenSSO_autentikacio (in Hungarian)

OpenSSO

Authenticate users using  Sun's Open Single Sign On service.

Login First vs OpenSSO