What is Nginx proxy service? Examples of nginx forward proxy and reverse proxy

This article introduces to you what is Nginx proxy service? The examples of nginx forward proxy and reverse proxy have certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

1. Agent introduction

1. Agent

##2. Nginx proxy service

3. The difference between forward proxy and reverse proxy

is that the objects of the proxy are different.

The object of the forward proxy is the client

The object of the reverse proxy proxy is the server

4. Nginx proxy module ngx_http_proxy_module

Syntax

Syntax:    proxy_pass URL;
Default:    —
Context:    location, if in location, limit_except

URL support:

1. http：

   http: //localhost:8000/uri/

2. https：

   https://192.168.1.111:8000/uri/

3. socket:

   http://unix:/tmp/backend.socket:/uri/

2. Reverse proxy instance

1. Create the real service configuration to be accessed: vim conf.d/real_server.conf

server {
    # 监听8080端口
    listen 8080;

    location / {
        # 配置访问根目录为 /vagrant/proxy
        root /vagrant/proxy;
    }
}

2. Create the reverse proxy configuration vim conf.d/fx_proxy.conf

server {
    # 监听80端口
    listen 80;
    server_name localhost;

    location ~ /fx_proxy.html {
        # 设置反向代理，将访问 /fx_proxy.html 的请求转发到 http://127.0.0.1:8080
        proxy_pass http://127.0.0.1:8080;
    }
}

3. nginx -s reload Reload nginx configuration file

4. Create /vagrant/proxy/fx_proxy.html file

• vim /vagrant/proxy/fx_proxy.html

nbsp;html>

    
        <meta>
        <title>反向代理</title>
    
    
        <h1>反向代理</h1>
    

5. Use ss -tln to check whether port 80 and port 8080 are all open

[root~]# ss -tln
State       Recv-Q Send-Q Local Address:Port               Peer Address:Port
LISTEN      0      128               *:8080                          *:*
LISTEN      0      128               *:80                            *:*
LISTEN      0      128               *:22                            *:*
LISTEN      0      10        127.0.0.1:25                            *:*
LISTEN      0      128              :::22                           :::*

6. Use curl for access testing

• http://127.0.0.1/fx_proxy.htmlcan be accessed normally

[root~]# curl http://127.0.0.1/fx_proxy.html
nbsp;html>

        
                <meta>
                <title>反向代理</title>
        
        
                <h1>反向代理</h1>
        

• http://127.0.0.1:8080/fx_proxy.htmlcan be accessed normally

[root~]# curl http://127.0.0.1:8080/fx_proxy.html
nbsp;html>

        
                <meta>
                <title>反向代理</title>
        
        
                <h1>反向代理</h1>
        

3. Forward proxy instance

The forward proxy must be tested on a formal server with a public IP.

The IP address of the author's remote server is: 39.106.178.166, and the domain name used for testing is zx_proxy.ws65535.top

1. 在服务器创建真实要访问的服务配置：vim conf.d/real_server.conf

server {
    # 监听80端口
    listen 80;
    # 域名为 zx_proxy.ws65535.top;
    server_name  zx_proxy.ws65535.top;

    location / {
        # $http_x_forwarded_for 可以记录客户端及所有中间代理的IP
        # 判断客户端IP地址是否是 39.106.178.166，不是则返回403
        if ($http_x_forwarded_for !~* "^39\.106\.178\.166") {
            return 403;
        }
        root   /usr/share/nginx/html;
        index  index.html;
    }
}

2. nginx -s reload 重新载入nginx配置文件

3. 在本地使用浏览器访问 http://zx_proxy.ws65535.top/，返回 403 Forbidden，说明访问被拒绝

4. 在服务器创建代理服务配置：vim conf.d/zx_proxy.conf

server {
    # 代理服务监听的端口（注意，一定要看服务器供应商控制台的安全组是否开启了该端口）
    listen 3389;

    # 配置DNS，223.5.5.5是阿里云的DNS
    resolver 223.5.5.5;
    
    # 正向代理配置
    location / {
        proxy_pass http://$http_host$request_uri;
    }
}

5. nginx -s reload 重新载入nginx配置文件

6. 浏览器配置代理（以下是Windows10的代理配置方式，其他操作系统自行配置）

• 控制面板 -> 网络和Internet -> 代理 -> 手动设置代理

7. 设置代理后在本地使用浏览器访问 http://zx_proxy.ws65535.top/，可以正常访问

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Nginx作为静态资源web服务来控制浏览器缓存以及实现防盗链

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