MOSS Site Collection Documents - Restricting special characters in a filename

Question

I am trying to block users from entering square brackets ([]) or other charcters to a filename while uploading a document.

Is there a way to block this in SharePoint Central Administration or is there settings that I can change?

Answer 1

I had to intercept the EventReciever during synchronous call (ItemAdding and ItemUpdating method) and cancel the event.