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Date:      Wed, 11 Jan 2012 23:26:31 +0000
From:      Gerald McNulty <gmnt99@gmail.com>
To:        freebsd-hackers@freebsd.org
Subject:   Assigning the PRIV_NETINET_BINDANY privilege required for setsockopt(IP_BINDANY)
Message-ID:  <CAD%2B_bPxs7fc=n6HYTtNKwUXLu9kC8KL%2Bi8P9XvTQbtddicKMRQ@mail.gmail.com>

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Hello,

Using IP_BINDANY to facilitate transparent proxying works as specified.
According the ip(4) man page and sys/netinet/ip_output.c, the
PRIV_NETINET_BINDANY privilege is required in order to make a setsockopt()
call with IP_BINDANY.

I would like to use this in an app that does not run as uid 0. Is it
possible to assign the PRIV_NETINET_BINDANY privilege to a specific uid or
process or can this mechanism only be used in jails to reduce root
privileges further?

Thank you

--
Gerald McNulty



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