Ubuntu 16.04 服务器中的连接已重置

Question

我刚刚在 Ubuntu 16.04 服务器上启动了一些 docker 服务。我出于测试目的禁用了 ufw。但是端口没有监听服务器。当我在浏览器中输入 http:// 时，它显示连接已重置。有任何方法可以监听此端口的外部连接。我是 Ubuntu 操作系统的初学者。抱歉，我的问题太简单了。

orderer0.Myname.com:
    extends:
        file: docker-compose-base.yml
        service: orderer
    container_name: orderer0.Myname.com
    environment:
        - ORDERER_HOST=orderer0.Myname.com
        - CONFIGTX_ORDERER_ORDERERTYPE=kafka
        - CONFIGTX_ORDERER_KAFKA_BROKERS=[kafka0:9092,kafka1:9092,kafka2:9092,kafka3:9092]
        - ORDERER_KAFKA_RETRY_SHORTINTERVAL=1s
        - ORDERER_KAFKA_RETRY_SHORTTOTAL=30s
        - ORDERER_KAFKA_VERBOSE=true

        - ORDERER_GENERAL_LOCALMSPID=MynameOrderer
        - ORDERER_GENERAL_GENESISPROFILE=SampleInsecureKafka
        - ORDERER_ABSOLUTEMAXBYTES=${ORDERER_ABSOLUTEMAXBYTES}
        - ORDERER_PREFERREDMAXBYTES=${ORDERER_PREFERREDMAXBYTES}
    volumes:
        - ../crypto-config/ordererOrganizations/Myname.com/orderers/orderer0.Myname.com/msp:/var/hyperledger/msp
        - ../crypto-config/ordererOrganizations/Myname.com/orderers/orderer0.Myname.com/tls:/var/hyperledger/tls
        - ../config/:/var/hyperledger/config
    depends_on:
        - kafka0
        - kafka1
        - kafka2
        - kafka3
    networks:
      behave:
         aliases:
           - ${CORE_PEER_NETWORKID}
    ports:
      - 7050:7050

我已经运行 docker ps 命令并验证服务已启动。