Nginx: Allow All But Block Certain POST Request URLS For Selected Spammer IP Address/CIDR

To allow all but block certain POST request URLs for selected spammer IP addresses/CIDR in Nginx, you can use the following configuration in your Nginx server block:

location / {
n if ($request_method = POST) {
n set $block 0;
n # block POST requests to /spammer
n if ($uri = /spammer) {
n set $block 1;
n }
n # block POST requests from selected IP addresses/CIDR
n if ($remote_addr ~* (192\.168\.0\.0/24|10\.0\.0\.0/8)) {
n set $block 1;
n }
n if ($block = 1) {
n return 403;
n }
n }
n # other location-specific configurations
n}

In this example, the “if ($request_method = POST)” statement checks if the request method is a POST request, and if it is, the following statements set a variable “block” to 1 if the request is to the URL “/spammer” or if the remote IP address matches either “192.168.0.0/24” or “10.0.0.0/8”. If the “block” variable is set to 1, the “return 403” statement returns a 403 Forbidden error to the client.

Note that you should replace the IP addresses/CIDR with the actual values for the spammer IP addresses that you want to block, and you should also add any additional location-specific configurations as necessary.

n(Ambien)