File screening to block image, music and other files

How to configure file screening to block image, music and other files such as on Windows Server on Truenas Core

As far as I know that feature does not exist.

Noted sir, thank you very much for the information

via SMB? if yes - have you googled “samba veto files”?

That hides the files from the SMB clients but does not prohibit upload of these.

Can I assume hides the files from the SMB client - then it can’t be access or excluded? (just wondering)

Add a cronjob to delete those extension afterwards - hehe?

It can’t be accessed. But you can still upload them to the share as far as I know.