JBREM000200: Remote connection failed: javax.security.sasl.SaslException: Authentication failed: all available authentication mechanisms failed in JBoss EAP 6

Issue

• I'm trying to setup a remote-outbound-connection for an ejb client to call an ejb on another JBoss EAP 6 server and I'm seeing this error message but vague error message where node2 is the the jboss.node.name property I set:

ERROR [org.jboss.remoting.remote.connection] (Remoting "node2" read-1) JBREM000200: Remote connection failed: javax.security.sasl.SaslException: Authentication failed: all available authentication mechanisms failed

• The "standalone.xml" for client has these configurations below:

    <security-realm name="ejb-security-realm">
    <server-identities>
      <secret value="cf86fc49735679542aa078d3d4a976be"/>
    </server-identities>
    </security-realm>
...
    <subsystem xmlns="urn:jboss:domain:remoting:1.1">
      <connector name="remoting-connector" socket-binding="remoting" security-realm="ApplicationRealm" />
        <outbound-connections>
    <remote-outbound-connection name="remote-ejb-connection" outbound-socket-binding-ref="remote-ejb" security-realm="ejb-security-realm" username="user">
      <properties>
        <property name="SASL_POLICY_NOANONYMOUS" value="false"/>
        <property name="SSL_ENABLED" value="false"/>
      </properties>
    </remote-outbound-connection>
  </outbound-connections>
...
  <outbound-socket-binding name="remote-ejb">
    <remote-destination host="host1" port="4447"/>
  </outbound-socket-binding>