Lightweight Directory Access Protocol (LDAP) is a protocol for storing and distributing directory information across a network. This directory information includes information about users, hardware devices, access roles and restrictions, and other information.

Some common implementations of LDAP include OpenLDAP, Microsoft Active Directory, IBM Tivoli Directory Server, Oracle Internet Directory, and others.

JBoss EAP 6 includes several authentication and authorization modules which allow you to use a LDAP server as the authentication and authorization authority for your Web and EJB applications.