# ACL Formats

Qpid ACLs This page last changed on Nov 18, 2008 by ritchiem.

The Qpid project has two ACL implementations. An initial version of ACLs was added to the Java Broker for M2.1 that uses XML configuration. For M4 a new format was designed to be implemented by both C++ and Java brokers. M4 release includes the initial C++ implementation and M5 is expected to include the Java implementation.

#### 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.