我的 blog 被 ddos 了，怀疑是在 V2EX 分享导致的

[duke807]

网站打不开，ssh 连接不上去，vps 后台看 cpu 、内存全部爆满

一开始怀疑某个程序出 bug 导致，重启之后还是一样

只能 vnc 登录，敲命令要等很久，好不容易看到 top 输出，然后 kill apache2 才行

查看 log ，一个最耗资源的 python cgi 被针对性攻击，挂了 cloudflare 也抗不住啊

最近一次分享是说我这个 blog 免注册的注册才是最好的注册，且不用密码，估计触碰到卖登录系统的人的蛋糕了： https://www.v2ex.com/t/927411

以下是 apache2 log：

172.69.22.65 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.69.22.224 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.69.22.225 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.9 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
162.158.166.173 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.69.22.76 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.69.134.11 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
141.101.86.185 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.113 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.139 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.6 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.110 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.69.134.11 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.116 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.112 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
162.158.166.172 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.9 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.139 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.137 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
162.158.166.172 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.116 - - [30/Mar/2023:17:01:14 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.69.22.4 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
141.101.86.6 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.137 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.111 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
162.158.166.169 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.112 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.116 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
162.158.166.172 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.7 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.7 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
162.158.166.168 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.112 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
162.158.166.172 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.6 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
141.101.86.90 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
162.158.166.172 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.6 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.138 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.6 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.113 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.158.9 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.110 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.136 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593
172.71.154.114 - - [30/Mar/2023:17:01:15 +0800] "POST /api/get-captcha HTTP/1.1" 500 593

[HongJay]

先生，这是常识

[Cu635]

标题内容还好，不过内容有点戏太多了……

分享的那人博客“关于”页面，里面说的需不需要注册问题、“联邦制”帐号系统，对于这个概念来讲实际上早就有产品了：disqus ，还有就是 github 帐号 oath 登录的博客评论系统。所以也谈不上“触碰到卖登录系统的人的蛋糕”。

[duke807]

最终打开 Cloudflare Under Attack mode 了事

[duke807]

@Cu635

可能有人无聊吧，反正看 cf 后台，正是我回复之后开始受到攻击的

https://i.imgur.com/KCDLS7b_d.webp?maxwidth=760

[Cu635]

@duke807 #4
可能是我没说清楚，我主要是说“触碰到卖登录系统的人的蛋糕”戏太多，分享之后被攻击倒是很合理的推测。

[gaobh]

问题来了，怎么防 ddos ？

[duke807]

@gaobh 见本帖 3 楼，效果很好，不影响正常用户访问，又能阻止攻击者访问我的网站

[1KTN90lKW9gVJ9vX]

@gaobh 充钱，

[duke807]

@hemingcn 不用，cf 是免费的

[7RTDKSAK]

MJJ 宣布对此攻击负责(滑稽)