I'd like to disable netstat and similar programs for my shell users. One of my users runs a MUCK (like a MUD) and would like to protect the MUCK users' network locations from other shell users.
I'm running with a 2.4 kernel with /proc, and so netstat is an unprivileged utility that merely grabs information out of /proc/net. My thought was to chmod away /proc/net in a startup script, unfortunately a chmod within /proc doesn't seem to take effect. I can chmod the mount point (/proc), but if I do this, it also defeats killall, ps, top and other essential tools for the users. Is there a way to chmod away just parts of /proc? Or is there a more conventional approach to disabling netstat and related /proc info for unprivileged users?
