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Groups > linux.kernel > #1291510

Re: Is PROT_SOCK still relevant?

From One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Newsgroups linux.kernel
Subject Re: Is PROT_SOCK still relevant?
Date 2015-12-14 20:50 +0100
Message-ID <qFHia-26U-3@gated-at.bofh.it> (permalink)
References <qFCiu-7lj-15@gated-at.bofh.it> <qFDez-7Vd-49@gated-at.bofh.it> <qFE0V-8ta-3@gated-at.bofh.it>
Organization Intel Corporation

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> Perhaps lets consider this in another way if it is strongly held that
> this is worth while in the default configuration: can it default off
> in the context of selinux / other security frameworks (preferably
> based on their detection and/or controllably settable at runtime)?
> Those allow more powerful and finer grain control and don't need this
> to be there as they already provide auditing on what operations and
> port numbers should be allowed by what programs.

That would be a regression and a very very bad one to have. The defaults
need to always be the same as before - or stronger and never go back
towards insecurity, otherwise they could make things less safe.

> Or how about letting port number concerns be handled by those security
> frameworks all together considering it is limited security?

There are already half a dozen different ways to handle it from xinetd
through setcap, to systemd spawning it, to iptables.

Alan
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Thread

Is PROT_SOCK still relevant? Jason Newton <nevion@gmail.com> - 2015-12-14 15:30 +0100
  Re: Is PROT_SOCK still relevant? One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2015-12-14 16:30 +0100
    Re: Is PROT_SOCK still relevant? Jason Newton <nevion@gmail.com> - 2015-12-14 17:20 +0100
      Re: Is PROT_SOCK still relevant? "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2015-12-14 19:40 +0100
      Re: Is PROT_SOCK still relevant? One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> - 2015-12-14 20:50 +0100
        Re: Is PROT_SOCK still relevant? Richard Weinberger <richard.weinberger@gmail.com> - 2015-12-14 21:20 +0100
        Re: Is PROT_SOCK still relevant? Jason Newton <nevion@gmail.com> - 2015-12-14 21:50 +0100
          Re: Is PROT_SOCK still relevant? Jason Newton <nevion@gmail.com> - 2015-12-16 16:00 +0100
            Re: Is PROT_SOCK still relevant? "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2015-12-16 18:10 +0100
            Re: Is PROT_SOCK still relevant? Jason Newton <nevion@gmail.com> - 2015-12-21 20:10 +0100

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