This documentation is for WSO2 Enterprise Service Bus version 4.9.0 . View documentation for the latest release.
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Given below is an overview of how some common security concepts are implemented in WSO2 Message Broker.

Security ConceptHow it is Implemented in WSO2 MB
AuthenticationAndes Authenticator connected entities to authenticate.
AuthorizationCreation and use of role-based permissions.
AvailabilityClustering using Apache Zookeeper.
IntegrityMessage-level encryption using WS-Security.

Let's see how each concept in the table above is implemented in WSO2 MB.  

To set up WSO2 MB with WSO2 ESB, refer to section Configure with WSO2 Message Broker. Also, open <MB_HOME>/repository/conf/advanced/qpid-config.xml file and add the following line as a child element of <tuning>.

<messageBatchSizeForBrowserSubscriptions>100000</messageBatchSizeForBrowserSubscriptions>

Authentication: Plain Text

WSO2 MB requires all its incoming connections to be authenticated. The <ESB_HOME>/repository/conf/jndi.properties file contains lines similar to the following. They contain the username and password credentials used to authenticate connections made to the WSO2 MB. This is plain text authentication.

connectionfactory.TopicConnectionFactory = amqp://admin:admin@clientID/carbon?brokerlist='tcp://localhost:5672'
connectionfactory.QueueConnectionFactory = amqp://admin:admin@clientID/carbon?brokerlist='tcp://localhost:5672' 

In the WSO2 MB authentication example below, we send a request to the proxy service testJMSProxy, which adds a message to the example.MyQueue queue.  

<definitions xmlns="http://ws.apache.org/ns/synapse">
  <registry provider="org.wso2.carbon.mediation.registry.WSO2Registry">
     <parameter name="cachableDuration">15000</parameter>
  </registry>
  <proxy name="testJMSProxy"
         transports="https http"
         startOnLoad="true"
         trace="disable">
     <target>
        <inSequence>
           <property name="FORCE_SC_ACCEPTED" value="true" scope="axis2"/>
           <property name="target.endpoint" value="jmsEP" scope="default"/>
           <store messageStore="testMsgStore"/>
        </inSequence>
     </target>
  </proxy>
  <endpoint name="jmsEP">
     <address uri="http://localhost:9000/services/SimpleStockQuoteService"/>
  </endpoint>
  <sequence name="fault">
     <log level="full">
        <property name="MESSAGE" value="Executing default 'fault' sequence"/>
        <property name="ERROR_CODE" expression="get-property('ERROR_CODE')"/>
        <property name="ERROR_MESSAGE" expression="get-property('ERROR_MESSAGE')"/>
     </log>
     <drop/>
  </sequence>
  <sequence name="main">
     <in>
        <log level="full"/>
        <filter source="get-property('To')" regex="http://localhost:9000.*">
           <send/>
        </filter>
     </in>
     <out>
        <send/>
     </out>
     <description>The main sequence for the message mediation</description>
  </sequence>
  <messageStore class="org.wso2.carbon.message.store.persistence.jms.JMSMessageStore"
                name="testMsgStore">
     <parameter name="java.naming.factory.initial">org.wso2.andes.jndi.PropertiesFileInitialContextFactory</parameter>
     <parameter name="java.naming.provider.url">repository/conf/jndi.properties</parameter>
     <parameter name="store.jms.destination">MyQueue</parameter>
  </messageStore>
</definitions>

 If you change the authentication credentials of the jndi.properties file, the connection will not be authenticated. You will see an error similar to:  

ERROR - AMQConnection Throwable Received but no listener set: org.wso2.andes.AMQDisconnectedException: Server closed connection and reconnection not permitted. 

Authentication: Encrypted

In the previous authentication example, the user names and passwords are stored in plain text inside the WSO2 ESB’s jndi.properties file. These credentials can be stored in an encrypted manner for added security.  

Authorization

WSO2 MB allows user-based authorization as seen in the example on WSO2 MB Authentication. To set up users, follow the instructions in User Management section of the WSO2 MB documentation.
 
WSO2 MB provides role-based authorization for topics, where public/subscribe access can be assigned to user groups. For more information on setting up role-based authorization for topics, refer to section Managing Topics and Subscriptions section of the WSO2 MB documentation.

Integrity

Integrity is part of message-level security, and can be implemented using a standard like WS-Security. Refer to the section on Integrity in ActiveMQ to see how message-level security works over JMS.

Next, let's see how security is implemented in Apache ActiveMQ: Security in Apache ActiveMQ.

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