When you run the wordpress blog there must be many external links would be created by others. which are not good for your blog. Some sites may be only using your wordpress images by your images links.
Prevent external requests for your WordPress
For Prevent external requests for your WordPress blog you need to use simple trick. WordPress api is given this facility to prevent the external request.
To do so, open your wp-config.php file and copy paste the following code:
It will block external requests from that time on. Though, some plugins need the external request to work properly. If you experience problems, you can define a whitelist by pasting the code below into wp-config.php. Don’t forget to replace my url by the one needed by the plugin.
if you are still having any issue then please contact to me.