Paul Ryan

jojaba

the_elusive

Eduardo Larequi

Anil Natha

pkarjala

Authorizer restricts access to a WordPress site to specific users, typically students enrolled in a university course. It maintains a list of approved users that you can edit to determine who has access. It also replaces the default WordPress login/authorization system with one relying on an external server, such as Google, CAS, LDAP, or an OAuth2 provider. Finally, Authorizer lets you limit invalid login attempts to prevent bots from compromising your users’ accounts.
View or contribute to the plugin source on GitHub: <a href="https://github.com/uhm-coe/authorizer" rel="nofollow ugc">https://github.com/uhm-coe/authorizer</a>
Authorizer requires the following:
<ul>
<li>CAS server (2.x, 3.x, 4.x, 5.x, 6.x, or 7.x) or LDAP server (plugin needs the URL)</li>
<li>PHP extensions: php-ldap, php-curl, php-dom</li>
</ul>
Authorizer provides the following options:
<ul>
<li>Authentication: WordPress accounts; Google accounts; CAS accounts; LDAP accounts; OAuth2 accounts</li>
<li>Login Access: All authenticated users (all local and all external can log in); Only specific users (all local and approved external users can log in)</li>
<li>View Access: Everyone (open access); Only logged in users</li>
<li>Limit Login Attempts: Progressively increase the amount of time required between invalid login attempts.</li>
<li>Shortcode: Use the <code>[authorizer_login_form]</code> shortcode to embed a wp_login_form() outside of wp-login.php.</li>
</ul>

Authorizer

Integrates nicely with Google hosted domain/s. Couldn't be happier with how it works!

Integrates well with Google Logins

I've experimented this plugin on a multisite and everything works pretty well.

Works great even on a multisite setup

Authorizer limits login attempts, restricts access to specific users, and authenticates against external sources (OAuth2, Google, LDAP, or CAS).

Henrique Mouta

jpargana

sandrof

ricardobaeta

If you have a CAS service and you want to authenticate your users in WordPress with the same credentials, you can use this plugin to get the job done.
The users that attempt to start their sessions in WordPress, will be redirected to the CAS single sign-on page, where their sessions starts. If the user data is valid, they are redirected back to WordPress. If the credentials already exist in your WordPress the user will be authenticated. Otherwise, if the user was pre-registered in the configuration page, the user will be created.
CAS Maestro can also connect to a LDAP server to access personal data to be used in user profile.
Features included:
<ul>
<li>Full integration with the WordPress authentication system</li>
<li>One of the most secure CAS plugins for WordPress</li>
<li>Possibility to pre-register some known users, with the desired role</li>
<li>LDAP integration for user data fill, such as name and e-mail </li>
<li>Validation mechanisms to avoid getting blocked in case of misconfiguration</li>
<li>Mail notification for pre-registered users</li>
<li>Network activation allowed (todo: network panel for configuration)</li>
</ul>

CAS Maestro

CAS Maestro allows you to configure your centralized authentication service, CAS, for an integrated log in with WordPress. LDAP is optional.

Authorizer vs CAS Maestro