How to block an IP address in NginX 2023

To block an IP address in NginX, you can use the "deny" and "allow" directives in the server configuration file. These directives allow you to specify a list of IP addresses or address ranges that are allowed or denied access to your server.

Here is an example of how to use the "deny" and "allow" directives in NginX to block an IP address:

server {
  listen 80;
  server_name example.com;

  # block requests from the IP address "1.2.3.4"
  deny 1.2.3.4;
  allow all;

  ...
}

In this example, the "deny" directive is used to block requests from the IP address "1.2.3.4". The "allow all" directive allows requests from all other IP addresses. When a request from the blocked IP address is received, NginX will return a 403 Forbidden error to the client.

You can modify this code to specify multiple IP addresses or address ranges to block, or to customize the error message or response code. Consult the documentation for the "deny" and "allow" directives for more information and options.