Is it possible to password protect directories in linux?

Hi,

I am using Red Hat OS 5.0, is there any way that i can password protect directories. I know i can change permission so that no other user can access the content, but sometimes in my office environment i need to share vnc terminal with other people from my login itself. So i want that if user (including myself) when try to access any dir, it should prompt for password just like sudo kind of thing where even if i had to run a command i need to run it using sudo with my password (login password).

Is this feasible or any other approach to protect my directory?

Thanks
Sarbjit

Local files don't work that way, not anywhere I've ever been.

You could change their ownership to a different user and prevent others from reading them. When they try and open them they'll get "permission denied". To get into them they'd need to su into that user.

You could also install truecrypt and make a volume with it, not truly a directory, it'd be a program they have to run to get into it.