LDAP Authentication Plugin for MySQL (auth_ldap) is an authentication plugin for MySQL Server. It allows you to create SQL users which are going to be authenticated using an LDAP server. This minimizes administrative duties, since your users will be able to reuse their existing accounts to access the database. The plugin requires MySQL 5.5.7 and up. It is compiled as an add-on, and does not require you to alter MySQL source code or recompile the entire server. The plugin adds support for LDAP using the openLDAP library.
LinOTP is a solution for strong two-factor authentication with one time passwords. It features a modular architecture into which UserIdResolver, authentication, and OTP calculation modules can be plugged. It includes UserIdResolver modules for LDAP/AD, SQL, and flat file user databases, and authentication modules for PAM and RADIUS. New modules can be developed easily. Supported tokens are HMAC-OTP/HOTP (RFC 4226/ OATH compliant), Aladdin eToken PASS, eToken NG-OTP, Safeword Alpine, Yubikey, Google Authenticator, motp, SMS OTP/Mobile TAN, email token, and a Simple Pass token for users without token hardware. TOTP is supported, along with a new algorithm for daily passwords for applications not supporting RADIUS. OCRA tokens are supported to allow transaction signing in banking environments. CLI, Web, and GTK+ GUI clients are available for management. LinOTP features multi-client capability, redundancy, and a self-service portal. It has been used with PAM for local and SSH logins, Apache, VPN, and Windows Terminal Server, and is OATH certified.