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社区首页 >问答首页 >如何防止iptable中的远程访问

如何防止iptable中的远程访问
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Server Fault用户
提问于 2021-09-02 01:07:36
回答 1查看 221关注 0票数 2

我已经用docker-compose设置了iptables,但是我只想要的ip地址的白名单似乎没有工作,因为服务器仍然在进行远程访问尝试:

代码语言:javascript
复制
Connection matched pg_hba.conf line 95: "host all all all md5"
2021-09-01 21:36:42.132 UTC [8821] FATAL:  password authentication failed for user "postgres"
2021-09-01 21:36:42.132 UTC [8821] DETAIL:  Role "postgres" does not exist.

如何将我的iptable修复为正确设置?我在这里做错了什么?

代码语言:javascript
复制
-P INPUT DROP
-P FORWARD DROP
-P OUTPUT ACCEPT
-N DOCKER
-N DOCKER-ISOLATION-STAGE-1
-N DOCKER-ISOLATION-STAGE-2
-N DOCKER-USER
-A INPUT -i lo -j ACCEPT
-A INPUT -i eth1 -j ACCEPT
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 443 -j ACCEPT
-A INPUT -s xxx.xxx.xx.xx/xx -p tcp -m tcp --dport 5432 -j ACCEPT (where x is removed ip addresses)
-A INPUT -s xxx.xxx.xx.xx/xx -p tcp -m tcp --dport 5432 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 0 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 3 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 11 -j ACCEPT
-A FORWARD -j DOCKER-USER
-A FORWARD -j DOCKER-ISOLATION-STAGE-1
-A FORWARD -o docker0 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -o docker0 -j DOCKER
-A FORWARD -i docker0 ! -o docker0 -j ACCEPT
-A FORWARD -i docker0 -o docker0 -j ACCEPT
-A FORWARD -o br-1de8a78b46b8 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -o br-1de8a78b46b8 -j DOCKER
-A FORWARD -i br-1de8a78b46b8 ! -o br-1de8a78b46b8 -j ACCEPT
-A FORWARD -i br-1de8a78b46b8 -o br-1de8a78b46b8 -j ACCEPT
-A FORWARD -p tcp -m tcp --dport 5432 -m iprange --src-range 82.208.14.110-82.208.14.119 -j ACCEPT
-A FORWARD -p tcp -m tcp --dport 5432 -j REJECT --reject-with icmp-port-unreachable
-A DOCKER -d 172.18.0.2/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 6379 -j ACCEPT
-A DOCKER -d 172.18.0.3/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 2368 -j ACCEPT
-A DOCKER -d 172.18.0.4/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 5432 -j ACCEPT
-A DOCKER -d 172.18.0.5/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 5900 -j ACCEPT
-A DOCKER -d 172.18.0.5/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 4444 -j ACCEPT
-A DOCKER -d 172.18.0.8/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 8000 -j ACCEPT
-A DOCKER -d 172.18.0.9/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 443 -j ACCEPT
-A DOCKER -d 172.18.0.9/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 80 -j ACCEPT
-A DOCKER -d 172.18.0.6/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 9300 -j ACCEPT
-A DOCKER -d 172.18.0.6/32 ! -i br-1de8a78b46b8 -o br-1de8a78b46b8 -p tcp -m tcp --dport 9200 -j ACCEPT
-A DOCKER-ISOLATION-STAGE-1 -i docker0 ! -o docker0 -j DOCKER-ISOLATION-STAGE-2
-A DOCKER-ISOLATION-STAGE-1 -i br-1de8a78b46b8 ! -o br-1de8a78b46b8 -j DOCKER-ISOLATION-STAGE-2
-A DOCKER-ISOLATION-STAGE-1 -j RETURN
-A DOCKER-ISOLATION-STAGE-2 -o docker0 -j DROP
-A DOCKER-ISOLATION-STAGE-2 -o br-1de8a78b46b8 -j DROP
-A DOCKER-ISOLATION-STAGE-2 -j RETURN
-A DOCKER-USER -j RETURN

编辑:

下面是我的配置:

代码语言:javascript
复制
  postgres:
    image: "postgres:12.1"
    env_file:
      - '.env'
    ports:
      - '5432:5432' # removed 127.0.0.1: - adding firewalls in iptables

    restart: "${DOCKER_RESTART_POLICY:-unless-stopped}"
    stop_grace_period: "${DOCKER_STOP_GRACE_PERIOD:-3s}"
    volumes:
      - postgres:/var/lib/postgresql/data
      - /opt/ghost_postgres:/var/lib/postgres
    networks: 
      - esnet

  redis:
    image: redis:5.0.6-alpine
    command: redis-server --requirepass "${REDIS_PASS}"
    restart: "${DOCKER_RESTART_POLICY:-unless-stopped}"
    stop_grace_period: "${DOCKER_STOP_GRACE_PERIOD:-3s}"
    ports:
      - '6379:6379'
    volumes:
      - redis:/var/lib/redis/data
    networks: 
      - esnet


  prosebit:
    build: 
      context: "."
      args:
        - "FLASK_ENV=${FLASK_ENV:-production}"
        - "NODE_ENV=${NODE_ENV:-production}"
    depends_on:
      - "postgres"
      - "redis"
    env_file:
      - ".env"
    ports:
      - "${DOCKER_WEB_PORT:-127.0.0.1:8000}:8000"
    restart: "${DOCKER_RESTART_POLICY:-unless-stopped}"
    stop_grace_period: "${DOCKER_STOP_GRACE_PERIOD:-3s}"
    volumes:
      - "${DOCKER_WEB_VOLUME:-./public:/app/public}"
    networks:
      - esnet
      
  web: 
    depends_on:
      - prosebit
    restart: always
    build:
      context: ../nginx #added /deploy for development, remove for production
      dockerfile: Dockerfile
    volumes:
      ...
    ports:
      - 80:80
      - 443:443
    networks:
      - "esnet"


  celery:
    build: 
      context: "."
      args: 
        - "FLASK_ENV=${FLASK_ENV:-production}"
        - "NODE_ENV=${NODE_ENV:-production}"
    command: celery worker -B -l info -A 
    env_file:
      - '.env'
    depends_on:
      - "postgres"
      - "redis"
    env_file:
      - ".env"
    restart: "${DOCKER_RESTART_POLICY:-unless-stopped}"
    stop_grace_period: "${DOCKER_STOP_GRACE_PERIOD:-3s}"
    volumes:
      - "${DOCKER_WEB_VOLUME:-./public:/app/public}"
    networks:
      - "esnet"
EN

回答 1

Server Fault用户

回答已采纳

发布于 2021-09-03 02:25:48

Docker在防火墙本身中打开端口,因为您的docker-come.yml显式请求端口5432向世界公开。

代码语言:javascript
复制
    ports:
      - '5432:5432' # removed 127.0.0.1: - adding firewalls in iptables

现在还不清楚这是为什么会出现在这里,以任何形式。请记住,同一个network中的服务可以始终相互访问,而不需要指定ports。仅指定ports以允许从外部访问。

PS:你也把你的红色容器暴露给了世界,这可能也不是你想要的。

票数 2
EN
页面原文内容由Server Fault提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://serverfault.com/questions/1076367

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