From: Paul Moore <paul.moore@hp.com>
To: Andy Warner <warner@rubix.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>,
SELinux List <selinux@tycho.nsa.gov>
Subject: Re: Significance of the level on a port configuration
Date: Thu, 12 Mar 2009 11:07:27 -0400 [thread overview]
Message-ID: <200903121107.27468.paul.moore@hp.com> (raw)
In-Reply-To: <1236793639.14649.67.camel@localhost.localdomain>
On Wednesday 11 March 2009 01:47:19 pm Stephen Smalley wrote:
> On Wed, 2009-03-11 at 18:44 +0100, Andy Warner wrote:
> > Can someone give me a quick overview of the significance (i.e., the
> > MLS behavior) of the port level for SELinux.
> >
> > I am attempting to have two connection from untrusted hosts that are
> > statically labeled (with netlabelctl) one at high (s0) and one at low
> > (s1). Both connections will be made over the same port number. The
> > service accepting the connections runs at SystemHigh on Fedora 9 with
> > MLS policy. What difference does the level of the port make ? Assume
> > all TE rules are satisfied for the context of my question.
>
> I don't think the port level should make any difference. Are there any
> MLS constraints defined on any of the permission checks that are based
> on port contexts?
Using the new network access controls there is no specific check against the
port label, only the network interface and node (both of which just recently
had the MLS constraints added).
--
paul moore
linux @ hp
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next prev parent reply other threads:[~2009-03-12 15:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-11 17:44 Significance of the level on a port configuration Andy Warner
2009-03-11 17:47 ` Stephen Smalley
2009-03-12 15:07 ` Paul Moore [this message]
2009-03-12 15:09 ` Stephen Smalley
2009-03-12 15:24 ` Paul Moore
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