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# 公开演示实例的额外加固。仅在把演示站暴露到公网时叠加使用:
#
# docker compose -f docker-compose.demo.yml -f docker-compose.demo.hardening.yml up -d
#
# 单独一个文件而不是并进主 demo 文件,是因为它会去掉端口映射,
# 本地随手跑一下看效果的人不需要这份麻烦。
#
# 做的事:把容器放进 internal 网络。容器从此没有任何出站路由——
# 连宿主机网关都不通,更别说公网。演示模式本就不需要出站,
# 这纯粹是纵深防御:万一以后给面板加了带 URL 参数的功能,
# SSRF 也无处可去。
#
# 代价:internal 网络下 Docker 不建立端口映射(docker port 为空),
# 所以反向代理不能再走 127.0.0.1:8771,得直连容器 IP。
# 为此固定了容器地址,nginx 里写:
#
# proxy_pass http://172.31.240.2:8770;
services:
demo:
networks:
isolated:
ipv4_address: 172.31.240.2
networks:
isolated:
internal: true
ipam:
config:
# /28 够用且避开常见的 172.17-172.26 段
- subnet: 172.31.240.0/28
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