nginx.conf

user  nobody;
worker_processes 4;
worker_rlimit_nofile 65536;
#
#...
#...

http {
    lua_shared_dict blocked 10m;
    # http config
    #...
    #...

    server {
        listen       80;

        # flush logs to logger server by hand
        location /_flush {
           allow 127.0.0.1;
           deny all;
           # point to your local path
           content_by_lua_file {path}/lualib/request/flush.lua;
        }

        # accept request, add ip to blacklist or remove
        location = /_process_ip {
            allow 127.0.0.1;
            # add your hosts here
            #allow 192.168.1.0/24;
            deny all;
            content_by_lua_block {
            local process_ip = require "request.process_ip"
                process_ip.process()
            }
        }
        
        # your proctected location
        location /yourlocation {
            # set ip address to value
            set $nginx_server_addr "192.168.1.123";
            set $logger_host "192.168.1.123";
            set $logger_port 5140;
            # proxy config
            # ...
            # ...

            # check request
            # point to your local path
            access_by_lua_file {path}/lualib/request/validate_ip.lua;
            # send request content to log server
            # point to your local path
            log_by_lua_file {path}/lualib/request/log.lua;
        }
    }
}