Problems with permissions on sockets.

[Kishore Seshadri]

In article <1990Jul27.003110.1699 at athena.mit.edu>, jik at athena (Jonathan I. Kamens) writes:
>
>|> and reading either kmem or mem complained about it not working. 
>
>  As someone already pointed out, having /dev/kmem and /dev/mem
>world-readable is a serious security hole (i.e. "all bets are off"), and
>my guess is that someone at your site who is concerned about security
>changed the permissions on it.  As someone else has also already pointed
>out, systems which are concerned about security should make the
>permissions on /dev/kmem and /dev/mem 640, assign group kmem to them,
>and make all system programs (netstat, pstat, ps, etc.) setgid kmem.
>
I seem to remember that mail (of all things) breaks on Ultrix 2.2 when
world read permissions are turned off on /dev/mem and /dev/kmem. Does 
anyone remember if/why this happens and whether its been fixed in 3.1?

Kishore
 
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Kishore Seshadri (Speaking for myself)      Intel Corp., Santa Clara, CA
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