Re: [RFC] TOMOYO Linux

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On Wed, 2007-06-13 at 16:32 -0700, william(at)elan.net wrote:
> On Thu, 14 Jun 2007, Toshiharu Harada wrote:
> 
> > 2007/6/14, Rik van Riel <[email protected]>:
> >> Toshiharu Harada wrote:
> >> > 2007/6/14, Rik van Riel <[email protected]>:
> >> > SELinux has a well designed robust and flexible functions.
> >> > So it should be used for everywhere.  I understand it.
> >> > As you mentioned one can analyze the system (process)
> >> > behaviors from AVC logs. But the maintenance cost is not trivial.
> >> >
> >> > If logging with process context is the only purpose,
> >> > current TOMOYO Linux can do it with no hustle at all.
> >> 
> >> Yes, but so does standard SELinux.
> >> 
> >> You are making me curious: what does TOMOYO do that is
> >> not done by regular SELinux?
> >> 
> >> Logging with process name, path name and contexts is
> >> already done.  I must have missed some other TOMOYO
> >> feature in your initial email...
> >
> > I see SELinux can log with process name, path name and
> > contexts, but "contexts" must be defined beforehand.
> > TOMOYO Linux kernel does that with pathname, so no
> > label definitions needed.
> > You can confirm the process (domain) transitions any time
> > and access occurred are clarified per domain basis automatically.
> > Security context in TOMOYO Linux is represented and stored
> > as a call chain and very intuitive.
> >
> > TOMOYO Linux has a mode called "learning"
> > in addition to "permissive" and "enforce". You can easily
> > get the TOMOYO Linux policy with learning mode that
> > SELinux does not have. In addition, access control mode of
> > TOMOYO Linux can be managed for every difference domain.
> 
> This sounds a like like feature differences "compared" at:
>   http://www.novell.com/linux/security/apparmor/selinux_comparison.html

Amazing, per that table, AppArmor is better in every way than SELinux.
Nothing like an unbiased and fair-minded comparison.

-- 
Stephen Smalley
National Security Agency

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