how to protect direct links of uploaded content ??

Try this https://www.ads-software.com/extend/plugins/download-monitor/

it provides you an easy to use download management interface, and you have an option that allows the file to be downloaded by members only

i try it, thanks in advance

i did try this plugin, but this is not solution of my problem, if anyone got the original link, he can view the file, i want to restrict the original/direct link.

I dont think that’s possible, make sure that no one knows the link, upload through the download manager and provide the generated link, the plugin even gives you download statistics.

try https://dlprotect.tk. it is the solution to your problem. (its my site!. if you want help goto https://www.dlprotect.tk/dlprotect.html
if you need more help goto https://hassan47.tk