我无法远程访问RabbitMq服务器当我在一台机器上这样做并连接到localhost：15672时，它可以工作，但当我从远程机器上尝试时，它就不行了。
我已经创建了一个拥有所有权限的用户，并检查计算机上的5672端口是否正常工作（只是试图从远程计算机连接到他）。另外，我试图连接到15672端口，但没有结果。

credentials = pika.PlainCredentials(username= 'username', password='password')
parameters = pika.ConnectionParameters(host='188.19.100.226',
                                   port=5672,
                                   virtual_host= '/',
                                   credentials=credentials)

connection = pika.BlockingConnection(parameters=parameters)
channel = connection.channel()

channel.queue_declare(queue='hello')

channel.basic_publish(exchange='',
                  routing_key='hello',
                  body=hello)
print ("Sent!")
connection.close()

我希望看到发送！，但我得到的不是：

ERROR:pika.adapters.utils.io_services_utils:Socket failed to connect: <socket.socket fd=7, family=AddressFamily.AF_INET, type=2049, proto=6, laddr=('192.168.100.2', 44752)>; error=111 (Connection refused)
ERROR:pika.adapters.utils.connection_workflow:TCP Connection attempt failed: ConnectionRefusedError(111, 'Connection refused'); dest=(<AddressFamily.AF_INET: 2>, <SocketKind.SOCK_STREAM: 1>, 6, '', ('188.19.100.226', 5672))
ERROR:pika.adapters.utils.connection_workflow:AMQPConnector - reporting failure: AMQPConnectorSocketConnectError: ConnectionRefusedError(111, 'Connection refused')
ERROR:pika.adapters.utils.connection_workflow:AMQP connection workflow failed: AMQPConnectionWorkflowFailed: 1 exceptions in all; last exception - AMQPConnectorSocketConnectError: ConnectionRefusedError(111, 'Connection refused'); first exception - None.
ERROR:pika.adapters.utils.connection_workflow:AMQPConnectionWorkflow - reporting failure: AMQPConnectionWorkflowFailed: 1 exceptions in all; last exception - AMQPConnectorSocketConnectError: ConnectionRefusedError(111, 'Connection refused'); first exception - None
ERROR:pika.adapters.blocking_connection:Connection workflow failed: AMQPConnectionWorkflowFailed: 1 exceptions in all; last exception - AMQPConnectorSocketConnectError: ConnectionRefusedError(111, 'Connection refused'); first exception - None
ERROR:pika.adapters.blocking_connection:Error in _create_connection().
Traceback (most recent call last):
  File "/home/roman/PycharmProjects/trrp2/venv/lib/python3.6/site-packages/pika/adapters/blocking_connection.py", line 450, in _create_connection
    raise self._reap_last_connection_workflow_error(error)
pika.exceptions.AMQPConnectionError
Traceback (most recent call last):
  File "/home/roman/PycharmProjects/trrp2/send.py", line 52, in <module>
    connection = pika.BlockingConnection(parameters=parameters)
  File "/home/roman/PycharmProjects/trrp2/venv/lib/python3.6/site-packages/pika/adapters/blocking_connection.py", line 359, in __init__
    self._impl = self._create_connection(parameters, _impl_class)
  File "/home/roman/PycharmProjects/trrp2/venv/lib/python3.6/site-packages/pika/adapters/blocking_connection.py", line 450, in _create_connection
    raise self._reap_last_connection_workflow_error(error)
pika.exceptions.AMQPConnectionError