How to block a visitor ipv6 using nginx config file?

by monroe.bahringer , in category: General Help , 3 months ago

How to block a visitor ipv6 using nginx config file?

Facebook Twitter LinkedIn Telegram Whatsapp

1 answer

Member

by modesta , 3 months ago

@monroe.bahringer 

To block a visitor's IPv6 address using Nginx's configuration file, you can use the ngx_http_geo_module module along with the MaxMind GeoIP database.


Follow these steps:

  1. Install MaxMind GeoIP module for Nginx:
1
sudo apt-get install libgeoip-dev


  1. Download the GeoIP database:
1
2
wget https://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz
gunzip GeoIP.dat.gz


  1. Add the following lines to your Nginx configuration file (nginx.conf or inside a specific server block):
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
http {
    ...
 
    # Define the GeoIP database
    geoip_country /path/to/your/GeoIP.dat;

    # Create a custom IPv6 blocking map
    map $geoip_country_code $allowed_country {
        default yes;
        XX no; # Replace XX with the two-letter country code you want to block.
    }
 
    server {
        ...
 
        # Block the visitor by IPv6
        if ($allowed_country = no) {
            return 403;
        }
 
        ...
    }
}


  1. Replace /path/to/your/GeoIP.dat with the actual path to the downloaded GeoIP database file.
  2. Replace XX in the $allowed_country map with the two-letter country code you want to block. For example, replace XX with US to block visitors from the United States.
  3. Save the configuration file and restart Nginx for the changes to take effect.


Now, any visitor with an IPv6 address from the blocked country will receive a 403 Forbidden error when trying to access your website.