```nginx

http { 
	limit_conn_zone $binary_remote_addr zone=limitperip:10m;
	 
	#large_client_header_buffers 2 1k;
	large_client_header_buffers 4 8k;

	#keepalive_timeout 55;
	keepalive_timeout 60s;

	#client_header_timeout 10;
	client_header_timeout 20s;

	#client_header_buffer_size 1k;
	client_header_buffer_size 4k;

	#client_body_buffer_size 1K;
	client_body_buffer_size 16k;

	#client_max_body_size 1k;
	client_max_body_size 50m;

	server_tokens off; # Disable version information globally

	#client_body_timeout 10；
	client_body_timeout 60s;

	#send_timeout 10;
	send_timeout 60s;
	
	server { 
		#limit_conn limitperip 10; 
		if ( $http_referer ~* (babes|forsale|girl|jewelry|love|nudit|organic|poker|porn|sex|teen) ) {
			return 403;
		}
		location / {
			limit_conn limitperip 10;
			if ($request_method !~ ^(GET|HEAD|POST|PUT|DELETE)$) {
                return 405; # Method Not Allowed
	        }
		}
	} 
}

```