Block On X-Forwarded-For By admin on April 22, 2021 in Uncategorized Block an IP address based on the X-Forwarded-For header: RewriteEngine on RewriteCond %{HTTP:X-Forwarded-For} 172\.89\.51\.228 RewriteRule .* - [F] 123 RewriteEngine onRewriteCond %{HTTP:X-Forwarded-For} 172\.89\.51\.228RewriteRule .* - [F] Related posts: Block By X-Forwarded-For In .htaccess Log X-Forwarded-For Headers Discourage HTTPS On WordPress Rewrite Rule To Block User Agent Block XSS on Apache or Nginx