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Date: Tue, 04 Mar 2008 10:34:33 -0500
From: Daniel J Walsh <dwalsh@redhat.com>
MIME-Version: 1.0
To: Hal <hal_bg@yahoo.com>
CC: selinux@tycho.nsa.gov
Subject: Re: xguest_u, LDAP and /tmp
References: <394679.44483.qm@web32205.mail.mud.yahoo.com>
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Hal wrote:
> Hi all,
> I have been trying to implement xguest on our public computer room.
> The users are authenticated by OpenLDAP (for easier user maintenance since
> there are many computers) and I successfully converted all the users to
> xguest_u. 
> I want to achieve a bit more security: I do not want the users to see other
> usernames using for example "ps -ef", "who", lastlog, and /tmp or /var/tmp. 
> 
> I saw something in D.Walsh blog which seems promising:
> ======
> Also add these lines to /etc/secuirty/namespace.conf
> /tmp    tmpfs   tmpfs   ~xguest
> /var/tmp        tmpfs   tmpfs   ~xguest
> $HOME           tmpfs   tmpfs   ~xguest
> ======
> So is there any way to make this default for all the users on all machines. And
> new users to work automatically with such private /tmp and /var/tmp?
> 
> Converting users however introduced another problem with firefox, it stopped
> working for the ldap users, but not for the local (/etc/passwd) ones which are
> also xguests. Tcpdump revealed LDAP requests by firefox only for the LDAP
> users. Any idea how to solve this issue?
> 
Ok I need to add auth_use_nsswitch to mozilla policy

> Thank you in advance!
> All ideas and solutions are welcome!
> 
> Hal
> 
> 
> 
> 
>       ____________________________________________________________________________________
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