How to configure SSL/TLS encrypted communication using Nginx

How to use Nginx to configure SSL/TLS encrypted communication

Overview
In the current Internet environment, security has become one of the most important considerations. Protecting user privacy and data security has become very important. One common way is to use SSL/TLS encrypted communication to ensure the security of data during transmission.

Nginx is a high-performance web server that is also widely used in reverse proxy and load balancing. This article will introduce how to use Nginx to configure SSL/TLS encrypted communication to ensure the security of your website.

Step 1: Obtain an SSL certificate
To use SSL/TLS to encrypt communication, you first need to obtain a trusted SSL certificate. Typically, you can purchase a certificate from a certificate authority (CA), or use the free Let's Encrypt service.

Step 2: Install Nginx
Before starting to configure SSL/TLS, you need to ensure that Nginx has been installed and configured correctly. You can check whether Nginx has been installed by running the following command:

nginx -v

If it is not installed, you need to install it according to the Nginx documentation.

Step 3: Configure Nginx
Open the Nginx configuration file, usually in /etc/nginx/nginx.conf or /etc/nginx/conf.d/default .conf under the path. Find the server block in the configuration and add the following code:

server {
    listen 80;
    server_name example.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    server_name example.com;

    ssl_certificate /path/to/ssl_certificate.crt;
    ssl_certificate_key /path/to/ssl_certificate.key;

    location / {
        ...
    }
}

In the above code, listen 443 ssl; defines the listening port as 443 and enables it SSL. server_name specifies your domain name. ssl_certificate and ssl_certificate_key specify the path to the SSL certificate and private key.

Step 4: Test the configuration
After saving and closing the configuration file, use the following command to test whether the configuration is correct:

nginx -t

If there are no errors, nginx: configuration file / etc/nginx/nginx.conf test is successful.

Then, reload Nginx for the configuration to take effect:

sudo nginx -s reload

Step Five: Verify SSL Encryption
Use a browser to visit your website and add https:/ in front of the URL / and check whether the secure connection is successfully established. A lock-shaped icon will be displayed in the browser, indicating that the website has encrypted communication through SSL/TLS.

Additional configuration: HTTP to HTTPS redirection
To enhance security, it is often necessary to redirect HTTP requests to HTTPS. You can add HTTP to HTTPS redirection in the Nginx configuration file using the following code:

server {
    listen 80;
    server_name example.com;
    return 301 https://$host$request_uri;
}

In the above code, listen 80 is the listening port set for HTTP requests.

Summary
Configuring SSL/TLS encrypted communication can provide higher security for your website and ensure the safety of users and data. With the steps provided in this article, you can easily configure Nginx to protect your website with SSL/TLS encrypted communication.

The article ends here. Hope this helps!

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