Nginx IP 차단하기

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To block IP addresses in Nginx, you can use the deny directive in the configuration file.

Here's an example of how to block a specific IP address:

  location / {
      deny   192.168.1.1;
      allow  all;
  }

You can also block a range of IP addresses using a CIDR block:

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

The deny directive should be placed inside the location block, and the allow directive should be used to specify which IP addresses should be allowed to access the site. In the example above, all IP addresses except for 192.168.1.1 and the range 192.168.1.0/24 will be allowed to access the site.

You can also use the allow directive to specify a list of allowed IP addresses, and use the deny directive to specify a list of denied IP addresses. For example:

  location / {
      allow   192.168.1.1;
      allow   192.168.1.2;
      deny    all;
  }

In this case, only the IP addresses 192.168.1.1 and 192.168.1.2 will be allowed to access the site, and all other IP addresses will be denied access.

Note that the allow and deny directives are evaluated in the order in which they appear in the configuration file. Therefore, it is important to place the deny directive after the allow directive, as shown in the examples above.

It is also possible to block IP addresses using the if directive and the $remote_addr variable. For example:

  location / {
      if ($remote_addr = 192.168.1.1) {
          return 403;
      }
  }

This will return a 403 Forbidden error to the client if the client's IP address is 192.168.1.1.

I hope this helps! Let me know if you have any other questions.