Re: [RFC] TOMOYO Linux

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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

--
William Leibzon
Elan Networks
[email protected]
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