11 Most Used WordPress Auth Plugins

Security against brute force attacks by tracking IP, name, password; requiring very strong passwords. Idle timeout. Maintenance mode lockdown.

The plugin Limit Attempts allows you to limit rate of login attempts by the ip, and create whitelist and blacklist.

Simple secure login and user management for Wordpress through your Google Apps domain (uses secure OAuth2, and MFA if enabled)

Browse for Google Drive documents and embed directly in your posts/pages. Extends Google Apps Login plugin so no extra user auth required.

Limit rate of login attempts and block ip temporarily (Up to 10 minutes). It is protecting from brute force attack.

Enabling this plugin allows you to set up Basic authentication on your site using your WordPress's user name and password.

Prevent careless visitors by locking your site down with a PIN

Plugin to integrate WordPress or WordPressMU with existing CAS architectures. Based largely on Stephen Schwink's CAS Authentication plugin.

Secure WordPress login with Two Factor Authentication - supports WooCommerce, front-end configuration, HOTP + TOTP (Google Authenticator, Authy, etc.)

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

This plugin hooks in the authenticate filter. By default, the plugin is set to allow all access and you can configure the plugin to allow the login on