272 lines
6.9 KiB
Markdown
272 lines
6.9 KiB
Markdown
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---
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title: 使用 Xray、acme.sh、Docker Compose 搭建内网穿透服务
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date: '2022-06-11'
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tags: ['xray', 'acme', 'acme.sh', 'docker', 'docker compose', '内网穿透']
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draft: false
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summary: 为了能在外直接访问家中网络,我组建了三套方案,一是 [[Xray]],二是 [[ZeroTier]],三是 [[NPS]]。今天,我准备在我上个月购入的服务器上再部署一套 Xray 服务,提高可用性。本次准备完全仰仗 Docker 容器,让我未来迁移服务更加省事。
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---
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## 简介
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为了能在外直接访问家中网络,我组建了三套方案,一是 [Xray](/tags/xray),二是 [ZeroTier](/tags/zerotier),三是 [NPS](/tags/nps)。今天,我准备在我上个月购入的服务器上再部署一套 Xray 服务,提高可用性。本次准备完全仰仗 Docker 容器,让我未来迁移服务更加省事。
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## 目标与方案
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个人自用,成本得控制到零(bushi),安全性还是得做得好些,所以选用 Xray 来承载功能,使用免费的 TLS CA 来签发证书。由于免费的证书一般有效期比较短 (常见的是 90 天),所以还需要实现自动续签。
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Let's Encrypt 和 acme.sh 是不错的组合。不过听说 Let's Encrypt 被收购了,不知道是否有安全风险,未来需要再确认下。由于财力并不雄厚,考虑到未来可能服务会”流离失所“,用容器方案比较好迁移。
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## 技术栈
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- Xray
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一款支持加密传输、内网穿透的网络工具。由 GoLang 编写,支持很多平台。
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_官方站点:[Project X](https://xtls.github.io/)_
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- acme.sh
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用于签发 TLS 证书。顾名思义,支持 ACME 协议签发、自动续签证书的脚本。
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_官方站点:[acmesh-official/acme.sh](https://github.com/acmesh-official/acme.sh)_
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- Caddy
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用于反向代理部署在家里的 Web 服务。它是现代的反向代理服务。
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_官方站点:[Caddy 2](https://caddyserver.com/v2)_
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- Docker Compose
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众所周知?
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## 搭建步骤
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### Docker Compose
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首先需要拥有并运行 Docker 和 Docker Compose。
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创建一个用于存放配置文件目录,并进入该目录。
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创建 Compose 配置文件:
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```bash
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touch docker-compose.yml
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vim docker-compose.yml
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```
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文件内容:
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```yaml
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version: '3.9'
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networks:
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caddy:
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name: caddy
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xray:
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name: xray
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volumes:
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caddy-data:
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name: caddy-data
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caddy-config:
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name: caddy-config
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acme-sh-data:
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name: acme-sh-data
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services:
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caddy:
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image: caddy:2
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container_name: caddy
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restart: always
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ports:
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- 80:80
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- 443:443
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networks:
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- caddy
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volumes:
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- $PWD/caddy/Caddyfile:/etc/caddy/Caddyfile
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- $PWD/site:/srv
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- caddy-data:/data
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- caddy-config:/config
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xray:
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image: teddysun/xray
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container_name: xray
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restart: always
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networks:
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- xray
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- caddy
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ports:
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- 3332-3334:3332-3334
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volumes:
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- ./xray:/etc/xray
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- acme-sh-data:/certs
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command: "xray -c=/etc/xray/config.yml"
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acme.sh:
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image: neilpang/acme.sh
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container_name: acme.sh
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# restart: always
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volumes:
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- acme-sh-data:/acme.sh
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env_file: acme.env
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command: "daemon"
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```
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### 签发证书
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使用 DNS Challenge 来签发证书,所以需要 DNS 服务商的 API 来实现自动化签发流程。
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以阿里云举例:
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1. 创建 RAM 子账户,并只允许访问 API;
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2. 复制 key 和 secret;
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3. 为 RAM 子账户授权 DNS 解析的管理权限。
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在当前目录创建 `acme.env` 文件:
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```zsh
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touch acme.env
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vim acme.env
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```
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文件内容:
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```zsh
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Ali_Key="sdfsdfsdfljlbjkljlkjsdfoiwje"
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Ali_Secret="jlsdflanljkljlfdsaklkjflsa"
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```
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启动 compose 服务:
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```zsh
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docker-compose up -d
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```
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前面我们启动了刚刚创建的 compose 服务,现在,我们使用 `acme.sh` 容器运行以下命令签发证书:
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```zsh
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docker exec acme.sh acme.sh --log --issue --dns dns_ali --server letsencrypt -d ivanli.cc -d "*.ivanli.cc"
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```
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签发成功后你将会在输出末尾看到如下内容:
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![签发成功时,程序输出图示](https://notes.ivanli.cc/assets/image_1654257070519_0.png)
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注意,签发通配符证书时,需要一次性将所有通配的子域都写在同一条命令上,使用 `-d` 参数追加。
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### 配置 Xray
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因为前面挂载了 `acme.sh` 的数据卷,所以默认的证书位于 `/certs/ivanli.cc/` 目录下。证书要使用 `fullchain` 的,避免证书链不完整,导致客户端连接验证失败。
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创建 Xray 配置文件:
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```zsh
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mkdir ./xray
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vim ./xray/config.yml
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```
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内容如下:
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```yml
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inbounds:
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# listening for host-name.home
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- tag: host-name.home.in
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listen: 0.0.0.0
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port: 3332
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protocol: vless
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settings:
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clients:
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- id: <uuid> # 你的 UUID
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flow: xtls-rprx-direct
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decryption: none
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streamSettings:
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network: tcp
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security: xtls
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xtlsSettings:
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serverName: ivanli.cc
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alpn:
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- http/1.1
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certificates:
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- certificateFile: /certs/ivanli.cc/fullchain.cer
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keyFile: /certs/ivanli.cc/ivanli.cc.key
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# reverse ssh to host-name.home
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- tag: ssh.host-name.home.in
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listen: 0.0.0.0
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port: 3334
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protocol: dokodemo-door
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settings:
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network: tcp
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address: 127.0.0.1
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port: 22
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# reverse http to 101.home
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- tag: http.host-name.home.in
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listen: 0.0.0.0
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port: 3333
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protocol: dokodemo-door
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settings:
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network: tcp
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address: 127.0.0.1
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port: 80
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outbounds:
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- protocol: freedom
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tag: direct
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- tag: blocked
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protocol: blackhole
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reverse:
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portals:
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- tag: host-name.home.portal
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domain: host-name.home.reverse
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routing:
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- type: field
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inboundTag:
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- ssh.host-name.home.in
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- http.host-name.home.in
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outboundTag: host-name.home.portal
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- type: field
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domain:
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- full:host-name.home.reverse
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outboundTag: host-name.home.portal
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```
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配置说明
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- `3332` 端口用于客户端连接服务端;
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- `3333` 端口用于 HTTP 穿透,映射了 `server:3333 <--> client:80` 端口;
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- `3334` 端口用于 SSH 穿透。
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- 如果需要连接更多的内网主机和端口,可以继续依葫芦画瓢地加。
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### 配置 Caddy
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为了让我们的 Web 站点能够公开到互联网,并且增强可控性,没有直接公开 Xray 的端口,而是使用 Caddy 反向代理 Xray 的穿透的本地端口。
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创建 Caddy 配置文件:
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```zsh
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mkdir ./caddy
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vim ./caddy/Caddyfile
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```
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内容如下:
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```caddyfile
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{
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servers {
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protocol {
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allow_h2c
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}
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}
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admin off
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}
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any-service.ivanli.cc, another-service.ivanli.cc {
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reverse_proxy http://localhost:3333
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}
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```
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端口 `3333` 是 Xray Server 映射家里 HTTP 服务的端口,所以我们这里反向代理服务器上的 3333 端口就好了。
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因为 Caddy 会自动从 CA 签发证书,所以这里不需要我们手动配置证书。
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配置完成后,重启服务就好
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```zsh
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docker-compose restart
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```
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现在,你拥有一个安全的内网穿透服务了~
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用户通过 HTTPS 协议访问服务器,服务器通过 TLS 加密连接与内网主机通讯。
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TODO 自动重启
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