Multi-section access control strategy in Nginx reverse proxy

1. The concept of Nginx reverse proxy

Reverse proxy means that after the proxy server receives the client's request, it forwards the request to the internal server for processing and returns the processing result to the client. Nginx is a high-performance, reliable web server and reverse proxy server that is widely used in Internet services, mobile applications, video streaming and other fields.

2. Multi-section access control issues of Nginx reverse proxy

When performing reverse proxy, access control issues of multiple sections are often involved. For example, the order module and inventory module of an e-commerce website need to set different access permissions for different users. At this time, you need to use Nginx's access control module to implement it.

3. Nginx access control module

Nginx access control module is divided into two types: access control based on IP address and access control based on user name and password. Among them, access control based on IP address is a relatively simple and commonly used method. This can be achieved through the following configuration:

location /order/ {
   allow 192.168.1.0/24;
   deny all;
  }
  
location /inventory/ {
  deny 192.168.1.0/24;
  allow all;
}

The above configuration indicates that the order module only allows access to users with an IP address of 192.168.1.0/24, and the inventory module only denies access to users with an IP address of 192.168.1.0/24 , can be accessed by other users.

4. Nginx’s multi-version control strategy

In addition to IP address-based access control, Nginx also provides a variety of flexible version control strategies. Here are some commonly used strategies.

1. URL-based version control

You can implement version-based access control by modifying the URL. For example, map /version1/order/ to the actual order module, and map /version2/order/ to another version of the actual order module. Then through the access control module, authorized access to different versions is achieved.

2. Header-based version control

You can implement version-based access control by modifying the HTTP Header. For example, for the order module, inject an "X-Order-Version: 1" Header into the HTTP request header to indicate the order module version to be accessed. Through Nginx's Header module, X-Order-Version is detected and mapped to the actual order module.

3. Host-based version control

You can implement version-based access control by modifying the Host. For example, for the order module, add a version number prefix to the Host, such as "v1.order.example.com". Then through DNS resolution, v1.order.example.com is mapped to the actual order module. Through the Nginx Server module, v1.order.example.com is detected and mapped to the actual order module.

5. Summary

Nginx’s reverse proxy module provides a variety of access control methods, which can easily achieve authorized access to multiple sections. In actual use, you should choose an appropriate version control method based on business needs, and pay attention to setting appropriate access control policies to ensure the security and stability of the website.

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