Prevent users from viewing other user processes?

I recently installed a new copy of Mandrake 9.2 and set the security level to 4 (Higher). I noticed when I started creating users that people could not view the process list because the /proc dir was chmoded 550 with root owner/group.

If I allow access to the proc, that means they can see all processes. I don't want that. I tried making a small program to prevent `ps -a` or `ps -U root`, but it doesn't work because it has to call the original PS at some point.

Is there a simple way to limit users to only viewing their processes? Or, if not, change it so that when a process is created, it is owned by that user and group and chmodded to 550?

(If anyone cares... ps1 and ps2 tests:
http://brajah.com/ps.txt )

Thanks in advance for taking a look at my problem.
Jack
root at brajah.com
Aim: Greenday8514
MSN: same as email.

I think you should be able to do something like

Code:

---

ps --User Jack

---

From:

http://linux.about.com/library/cmd/blcmdl1_ps.htm

Hope that helps,
Jeremy

That would work, however, they would still be able to change it, if it were an alias.
I was thinking more along the lines of forcing them to only look at their processes, but there's no file that root can own that dictates ps defaults.

Thanks though,
Jack

You could create a script that will disregard all ps switches and only display the user.

Jeremy