"Authentication failed" エラーが表示され、JBoss CLI を使用して JBoss EAP に接続できない

Issue

• 以下の例外により、jboss-cli.sh 経由でリモート JBoss EAP 6 に接続できません。

$ ./bin/jboss-cli.sh -c --controller=hostname:9999 --user=adminuser --password=adminpassword
org.jboss.as.cli.CliInitializationException: Failed to connect to the controller
    at org.jboss.as.cli.impl.CliLauncher.initCommandContext(CliLauncher.java:284)
    at org.jboss.as.cli.impl.CliLauncher.main(CliLauncher.java:262)
    at org.jboss.as.cli.CommandLineMain.main(CommandLineMain.java:34)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.jboss.modules.Module.run(Module.java:292)
    at org.jboss.modules.Main.main(Main.java:455)
Caused by: org.jboss.as.cli.CommandLineException: Unable to authenticate against controller at hostname:9999
    at org.jboss.as.cli.impl.CommandContextImpl.tryConnection(CommandContextImpl.java:956)
    at org.jboss.as.cli.impl.CommandContextImpl.connectController(CommandContextImpl.java:808)
    at org.jboss.as.cli.impl.CommandContextImpl.connectController(CommandContextImpl.java:784)
    at org.jboss.as.cli.impl.CliLauncher.initCommandContext(CliLauncher.java:282)
    ... 8 more
Caused by: javax.security.sasl.SaslException: Authentication failed: all available authentication mechanisms failed
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:367)
    at org.jboss.remoting3.remote.ClientConnectionOpenListener$Capabilities.handleEvent(ClientConnectionOpenListener.java:229)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72)
    at org.xnio.channels.TranslatingSuspendableChannel.handleReadable(TranslatingSuspendableChannel.java:189)
    at org.xnio.channels.TranslatingSuspendableChannel$1.handleEvent(TranslatingSuspendableChannel.java:103)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72)
    at org.xnio.channels.TranslatingSuspendableChannel.handleReadable(TranslatingSuspendableChannel.java:189)
    at org.xnio.ssl.JsseConnectedSslStreamChannel.handleReadable(JsseConnectedSslStreamChannel.java:180)
    at org.xnio.channels.TranslatingSuspendableChannel$1.handleEvent(TranslatingSuspendableChannel.java:103)
    at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:72)
    at org.xnio.nio.NioHandle.run(NioHandle.java:90)
    at org.xnio.nio.WorkerThread.run(WorkerThread.java:187)
    at ...asynchronous invocation...(Unknown Source)
    at org.jboss.remoting3.EndpointImpl.doConnect(EndpointImpl.java:270)
    at org.jboss.remoting3.EndpointImpl.doConnect(EndpointImpl.java:251)
    at org.jboss.remoting3.EndpointImpl.connect(EndpointImpl.java:349)
    at org.jboss.remoting3.EndpointImpl.connect(EndpointImpl.java:337)
    at org.jboss.as.protocol.ProtocolConnectionUtils.connect(ProtocolConnectionUtils.java:80)
    at org.jboss.as.protocol.ProtocolConnectionUtils.connectSync(ProtocolConnectionUtils.java:99)
    at org.jboss.as.protocol.ProtocolConnectionManager$EstablishingConnection.connect(ProtocolConnectionManager.java:256)
    at org.jboss.as.protocol.ProtocolConnectionManager.connect(ProtocolConnectionManager.java:70)
    at org.jboss.as.protocol.mgmt.FutureManagementChannel$Establishing.getChannel(FutureManagementChannel.java:204)
    at org.jboss.as.cli.impl.CLIModelControllerClient.getOrCreateChannel(CLIModelControllerClient.java:160)
    at org.jboss.as.cli.impl.CLIModelControllerClient$2.getChannel(CLIModelControllerClient.java:120)
    at org.jboss.as.protocol.mgmt.ManagementChannelHandler.executeRequest(ManagementChannelHandler.java:117)
    at org.jboss.as.protocol.mgmt.ManagementChannelHandler.executeRequest(ManagementChannelHandler.java:92)
    at org.jboss.as.controller.client.impl.AbstractModelControllerClient.executeRequest(AbstractModelControllerClient.java:236)
    at org.jboss.as.controller.client.impl.AbstractModelControllerClient.execute(AbstractModelControllerClient.java:141)
    at org.jboss.as.controller.client.impl.AbstractModelControllerClient.executeForResult(AbstractModelControllerClient.java:127)
    at org.jboss.as.controller.client.impl.AbstractModelControllerClient.execute(AbstractModelControllerClient.java:71)
    at org.jboss.as.cli.impl.CommandContextImpl.tryConnection(CommandContextImpl.java:947)
    ... 11 more

• EAP 6.0.x/6.1.x のローカルマシンから接続する場合、jboss-cli.sh に任意のユーザー/パスワードを指定できます。しかし、EAP 6.2.x 以降で同じことを実行すると、上記の例外が発生しました。何が原因でこのような違いが発生するのでしょうか?

• EAP 7 で JBoss CLI 経由で接続すると、以下のような問題が発生します。

Authentication failed: all available authentication mechanisms failed:
   PLAIN: javax.security.sasl.SaslException: PLAIN: Server rejected authentication