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From: Tilman Baumann <tilman.baumann@collax.com>
To: Casey Schaufler <casey@schaufler-ca.com>
Cc: Linux-Kernel <linux-kernel@vger.kernel.org>,
	linux-security-module@vger.kernel.org
Subject: Re: SMACK netfilter smacklabel socket match
Date: Fri, 17 Oct 2008 18:57:16 +0200	[thread overview]
Message-ID: <48F8C3EC.1030607@collax.com> (raw)
In-Reply-To: <48EACC91.8040008@schaufler-ca.com>

Hi Casey,

the last weeks I tried to come up with some way to circumvent my 
problems by aimlessly poking around in the code. Did not work though. 
Not yet at least. :)
Maybe it makes more sense for me to wait until you have a solution.
My whole project is stalled right now because of this and I'm not sure 
what next.
Do you plan to change something there soon? If so I would stop wasting 
my time with hopeless attempts.

My problem is at the moment that I don't really know what to do. If you 
can give some aim I would be glad if I could do something.

Thanks

Casey Schaufler wrote:
> Tilman Baumann wrote:
>> Casey Schaufler wrote:
>>> Tilman Baumann wrote:
>> This might work well in trusted networks.
>> But Internet is untrusted and needs to work too. At least in the most 
>> real world scenarios. :)
> 
> Yes. I'm pretty close to convinced that it needs to be included as
> part of the single-label host solution. Not that it can possibly be
> excused in any real secure environment mind you.
> 
>>>> If i set /smack/nltype to 'unlabled' i don't even get SYN packets 
>>>> out. (operation not permitted)
>>>
>>> That's probably a bug, but I think the "fix" is to disable the 
>>> ability to
>>> set the nltype to anything other than CIPSO at least for the time being.
>>
>> Well, there is a case statement in smack_lsm.c that checks for the 
>> nltype (smack_net_nltype) and omits net labeling if cipso is not set.
>> This seems to be a very sensible thing to do. I strongly advice for a 
>> way to omit netlabel based access control.
> 
> Yes, I hear you.


-- 
Tilman Baumann
Software Developer
Collax GmbH . Boetzinger Strasse 60 . 79111 Freiburg . Germany

p: +49 (0) 89-990157-0
f: +49 (0) 89-990157-11

Geschaeftsfuehrer: William K. Hite / Boris Nalbach
AG Muenchen HRB 158898, Ust.-IdNr: DE 814464942

  reply	other threads:[~2008-10-17 16:57 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-25 17:25 Tilman Baumann
2008-09-25 18:26 ` Paul Moore
2008-09-25 19:26   ` Tilman Baumann
2008-09-25 19:57     ` Paul Moore
2008-09-25 20:32       ` Tilman Baumann
2008-09-26 12:35   ` Tilman Baumann
2008-09-26 19:55     ` Paul Moore
2008-09-26  3:43 ` Casey Schaufler
2008-09-26  8:19   ` Tilman Baumann
2008-09-27  5:01     ` Casey Schaufler
2008-09-29 16:21       ` Tilman Baumann
2008-09-30  3:29         ` Casey Schaufler
2008-10-01 11:29           ` Tilman Baumann
2008-10-01 15:21             ` Casey Schaufler
2008-10-01 16:55               ` Tilman Baumann
2008-10-01 18:22                 ` Casey Schaufler
2008-10-06 12:57                   ` Tilman Baumann
2008-10-06 23:05                     ` Ahmed S. Darwish
2008-10-07  2:42                     ` Casey Schaufler
2008-10-17 16:57                       ` Tilman Baumann [this message]
2008-10-17 17:53                         ` Casey Schaufler
2008-10-20 12:06                           ` Tilman Baumann
2008-10-20 15:01                             ` Casey Schaufler
2008-10-22  3:36                             ` Casey Schaufler
2008-10-30 16:06                               ` Tilman Baumann
2008-10-31  3:46                                 ` Casey Schaufler
2008-12-11  0:03                                 ` Casey Schaufler
2008-12-11 10:18                                   ` Tilman Baumann
2008-12-11 16:29                                     ` Casey Schaufler
2008-10-23 11:55                           ` Paul Moore

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