On Tue, 24 Apr 2007, Casey Schaufler wrote:
> --- Gerhard Mack <[email protected]> wrote:
>
> > On Tue, 24 Apr 2007, Roberto De Ioris wrote:
> >
> > > Hi all,
> > >
> > > this is the second release for UidBind LSM:
> > >
> > > http://projects.unbit.it/uidbind/
> > >
> > > UidBind allows call to bind() function only to the uid defined in a
> > > configfs tree.
> > >
> > > It is now possible to specify different uid (for the same port) on
> > > different ipv4 addresses:
> > >
> > > mkdir uidbind/8081
> > > mkdir uidbind/8081/192.168.1.17
> > > mkdir uidbind/8081/192.168.1.26
> > > echo 1017 > uidbind/8081/192.168.1.17/uid
> > > echo 1026 > uidbind/8081/192.168.1.26/uid
> > >
> > > This version even fix some leek in version 0.1
> > >
> > > Patch attached is still for vanilla 2.6.20.7
> >
> > Is it possible to specify ranges as allowing everyone? Is it possible to
> > allow multiple users acess to the same port? Can ports be allowed by
> > group?
>
> If you're going to go beyond the simple owner access model it
> probably makes sense to go all out, swipe the file system ACL
> code and provide the whole nine yards of users, groups, and modes.
> The only system that I know of that had socket ACLs was the 4.X
> version of Trusted Irix, and socket ACLs were dropped in 5.0 because
> they were unpopular.
>
> If you're daring you could propose that low number ports be treated
> the same way as other ports, with the default ownership being root and
> the default ACL allowing only root.
ACL may be more complicated than needed when a simple GID addition would
make this right about perfect.
> > I really like the idea of this patch. It has the potential to solve a lot
> > of my current administrative headachs.
>
> Putting access control on ports rather than sockets is a novel
> approach. It is a lot simpler underneath and more consistant with
> the way other object name spaces are treated.
Indeed I'm fond of it's rather simple and very scriptable interface.
Gerhard
--
Gerhard Mack
[email protected]
<>< As a computer I find your faith in technology amusing.
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