The Qpid project has two ACL implementations currently. The java broker has a simple XML configuration mechanism icluded as part of the main broker configuration. The C++ broker and the latest versions of the Java broker also have a new, text based ACL file format. Specifications The specifications for each of the ACL formats are linked here: User Guides To aid users in defining their ACLs we have a user guide for each of the ACL formats and a page describing the security plugin mechanism in the Java broker.