Vanilla unix policy

Vanilla unix policy

[Justin R. Smith]

Some thoughts:

1. SeLinux implements a very nice GENERAL scripting language for
security policies.

2. Is there a simple policy that merely duplicates the one that
implicitly exists in Linux already (i.e., user, group ownership and
permissions)?  

My thoughts are that one could begin with this and tighten it up one
step at a time. This might be easier than trying to create a very
fine-grained security policy from the outset.
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Re: Vanilla unix policy

[Stephen Smalley]

On 10 Oct 2001, Justin R. Smith wrote:

> 2. Is there a simple policy that merely duplicates the one that
> implicitly exists in Linux already (i.e., user, group ownership and
> permissions)?

The SELinux access controls are orthogonal to the existing Linux access
controls, so there isn't any reason to try to emulate the Linux access
controls in the SELinux policy.  The SELinux access controls can be used
to further restrict access based on the system security policy, but they
do not replace the existing controls.  With the example security server,
you can provide the "simple policy" that you describe by only using a
single role, domain, and type for all subjects and objects and granting
all permissions.  Or you can use the trivial security server, although we
haven't been maintaining it lately.

--
Stephen D. Smalley, NAI Labs
ssmalley@nai.com




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