Prevent Access to Custom 404 Controller

[eluser]fjamal[/eluser]
[quote author="Aken" date="1344576093"]You can prevent access to certain controllers in various ways - protected/private method assignment, underscore prefix in the method name, etc. There's no real point to blocking access to the 404 controller, though, since it'll output exactly the same thing as any other 404 page that doesn't exist.[/quote]

I agree, its pointless.