阻止外部访问Docker容器
我想阻止从外部直接访问docker容器。我使用haproxy,并且只希望访问端口80、443。
我在iptables中添加了以下规则。但是我仍然可以通过不同的端口访问Docker容器。
*filter:INPUT DROP [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 443 -j ACCEPT
COMMIT
这可能是由于DOCKER链
# iptables -LChain INPUT (policy DROP)
target prot opt source destination
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT icmp -- anywhere anywhere
ACCEPT all -- anywhere anywhere
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ssh
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:http
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:https
Chain FORWARD (policy ACCEPT)
target prot opt source destination
DOCKER-ISOLATION all -- anywhere anywhere
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain DOCKER (4 references)
target prot opt source destination
ACCEPT tcp -- anywhere 172.18.0.2 tcp dpt:http
Chain DOCKER-ISOLATION (1 references)
target prot opt source destination
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
RETURN all -- anywhere anywhere
我需要创建什么规则来阻止直接访问?
回答:
您可以使用docker network create
NETWORK命令创建一个网络来连接应用程序和代理,而不必使用IP表来执行此操作。另外,请勿在任何端口上公开应用程序。您应该公开的唯一容器是代理。然后,您可以从代理内使用容器名称作为主机名路由通信。其他容器可以访问同一网络上的每个容器。
例如,如果
- 我有一个名称为的容器A,
my-service
并且在端口3000上运行了服务,并且 - 容器B是运行在端口80上的代理, 。我的代理可以将请求传递到http:// my-service:3000,它将流量路由到容器。
- 如果我尝试转到http:// mydomain:3000,则该端口将无法工作,因为端口尚未公开,访问应用程序的唯一方法是通过端口80上的代理
我建议您阅读https://docs.docker.com/engine/userguide/networking/work-with-
networks/,因为这说明了如何开始使用网络。
希望这是有用的。
迪伦
回答:
由于不了解有关代理,网络限制等方面的设置细节,因此我对流程进行了概括。由于上面的链接比我更擅长于此,因此我也没有涉及特定的命令。
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