如何从AWS、Google Cloud LB和Cloudflare中获取客户端IP在Nginx中？

作者姚伟斌

在云中设置一个网页应用程序总是有趣和令人兴奋的。

最近，我推出了一个Geekflare Tools工具，它托管在AWS上，在Cloudflare后面。

我正在使用AWS应用程序负载均衡器和Nginx作为Web服务器。在完成后，我去看访问日志，并注意到所有请求都标记为来自内部(负载均衡器)IP。

如果你想为访客位置进行链接，则这样不好。我意识到我遗漏了或需要进行一些配置更改才能恢复客户端IP。

你是否处于和我当时一样的情况？

好吧，下面是如何在Nginx访问日志中获取客户端IP的方法。

从AWS或Google Cloud LB获取访问者IP

  • 登录到你的Nginx Web服务器
  • 进入安装路径（默认位置为/etc/nginx）
  • 备份nginx.conf文件
  • 在HTTP块下添加以下内容
real_ip_header X-Forwarded-For;
set_real_ip_from 0.0.0.0/0;
  • 重启Nginx，你应该在access.log文件中看到访问者的IP

如果你在Cloudflare后面，那么你将看到他们的IP而不是客户端的IP，所以你还需要执行以下操作。

从Cloudflare获取客户端IP

Cloudflare是一个很好的CDN和Security provider，我非常喜欢它。如果你像我一样使用Cloudflare，并希望在Web服务器日志中恢复访客IP，那么你可以这样做。

假设你已登录到Nginx服务器

备份你的站点配置文件（通常在这里 – /etc/nginx/sites-available/yourdomain）

在文件开头添加以下内容

set_real_ip_from 103.21.244.0/22;
set_real_ip_from 103.22.200.0/22;
set_real_ip_from 103.31.4.0/22;
set_real_ip_from 104.16.0.0/13;
set_real_ip_from 104.24.0.0/14;
set_real_ip_from 108.162.192.0/18;
set_real_ip_from 131.0.72.0/22;
set_real_ip_from 141.101.64.0/18;
set_real_ip_from 162.158.0.0/15;
set_real_ip_from 172.64.0.0/13;
set_real_ip_from 173.245.48.0/20;
set_real_ip_from 188.114.96.0/20;
set_real_ip_from 190.93.240.0/20;
set_real_ip_from 197.234.240.0/22;
set_real_ip_from 198.41.128.0/17;
set_real_ip_from 199.27.128.0/21;
set_real_ip_from 2400:cb00::/32;
set_real_ip_from 2606:4700::/32;
set_real_ip_from 2803:f800::/32;
set_real_ip_from 2405:b500::/32;
set_real_ip_from 2405:8100::/32;
set_real_ip_from 2c0f:f248::/32;
set_real_ip_from 2a06:98c0::/29;
real_ip_header CF-Connecting-IP;

注意：你可能需要从他们的official page验证IP列表。

重启Nginx，现在你应该看到客户端IP。这对我有帮助，希望对你也有帮助。

接下来，找出如何实现secure headers using Cloudflare Workers。

姚伟斌

程序猿

我是姚伟斌，也被称为文景。我的专业领域涵盖了开放源代码的深度探索、网络编程和网络建站。我热衷于分享我的编程和建站实践经验，尤其擅长于Nginx和Proxy服务器的管理。此外，我还对Python和NodeJS这两种编程语言有着深刻的理解和独到的见解。

最近，我致力于爬虫技术的研究，探索如何通过高效的数据抓取为项目增添价值。我的目标是通过持续的学习和创新，为开放源代码社区贡献我的力量，并帮助那些对网络编程和网站建设感兴趣的人士。

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