MitseaBlog/content/post/c048b27771374b6588b5ff08563e1f3c/index.zh-cn.md
FlintyLemming 457c28c426 fix bug
2022-09-25 11:24:16 +08:00

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+++
author = "FlintyLemming"
title = "自建 Tailscale DERP"
slug = "c048b27771374b6588b5ff08563e1f3c"
date = "2022-09-17"
description = ""
categories = ["Network", "Linux"]
tags = ["Tailscale"]
image = "https://img.mitsea.com/blog/posts/2022/09/%E8%87%AA%E5%BB%BA%20Tailscale%20DERP/title.jpg?x-oss-process=style/ImageCompress"
+++
## 配置 Go 环境
以下参考
[How To Install Go on Ubuntu 20.04 | DigitalOcean](https://www.digitalocean.com/community/tutorials/how-to-install-go-on-ubuntu-20-04)
1. 在 Go 官网查找并下载最新版
[Downloads - The Go Programming Language](https://go.dev/dl/)
2. 解压并放到 `/usr/local` 文件夹中
```bash
sudo tar -C /usr/local -xvf go1.19.1.linux-amd64.tar.gz
```
3. 配置 shell 环境
编辑 `.profile` 文件
```bash
sudo nano ~/.profile
```
在最后一行加上
```bash
export PATH=$PATH:/usr/local/go/bin
```
刷新设置
```bash
source ~/.profile
```
执行 `go version` 命令,能看到版本就行
## 安装 DERP
执行下面的命令安装
```bash
go install tailscale.com/cmd/derper@main
```
## 准备 DERP 所需内容(使用 443 端口)
### 域名
准备一个子域名,解析到当前服务器
### SSL 证书
准备域名对应的 SSL 证书,注意名字必须是 <域名>.crt 和 <域名>.key放在某个文件夹里
## 启动 DERP
```bash
/root/go/bin/derper -hostname <域名> -certdir <证书存放路径> -certmode manual -verify-clients
```
保活的话,可以把这个做成服务或者直接丢到一个 screen 里跑
## 防止被滥用
默认情况下,只要别人知道你这个域名,就可以使用你的 DERP 服务器。
要想不被滥用也很简单,因为我们之前已经在启动的时候添加了 `-verify-clients` flag所以现在只需要将这台 DERP 服务器也加入到你的 Tailscale 里就行。
> Photo by [Martin Sanchez](https://unsplash.com/@martinsanchez?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText) on [Unsplash](https://unsplash.com/s/photos/global?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText)