ideacrib on "Someone is trying to access my site's admin page via a FCKeditor"

Hi,

Checked my site stats earlier and noted that someone from Fuzhou, China (with this IP address: 27.159.208.172) is trying to access my blog's admin page via this link: http://ideacrib.net/admin/fckeditor/editor/filemanager/connectors/test.html. This isn't the first time that this has happened. Every now and then, I'd note attempts from China to access my admin page via that same link.

I searched Google to learn more about the FCKeditor and learned that it's an open source web text editor. Can anyone please tell me if this is something that I should be concerned about? What can I do to protect my site from hackers?

Thanks a lot!