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Date:      Fri, 21 Feb 2003 11:56:07 -0800
From:      "David O'Brien" <obrien@FreeBSD.org>
To:        Garance A Drosihn <drosih@rpi.edu>
Cc:        "Crist J. Clark" <cjc@FreeBSD.org>, src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/netinet in_pcb.c (priv ports)
Message-ID:  <20030221195607.GD92798@dragon.nuxi.com>
In-Reply-To: <p05200f0dba7b6c5f4cb2@[128.113.24.47]>
References:  <200302210528.h1L5SS0H092948@repoman.freebsd.org> <p05200f0dba7b6c5f4cb2@[128.113.24.47]>

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On Fri, Feb 21, 2003 at 12:54:04AM -0500, Garance A Drosihn wrote:
> >    net.inet.ip.portrange.reservedhigh  default = IPPORT_RESERVED - 1
> >    net.inet.ip.portrange.reservedlo    default = 0
> >
> >  Now you can run that webserver without ever needing root at all. Or
> >  just imagine, an ftpd that can really drop privileges, rather than
> >  just set the euid, and still do PORT data transfers from 20/tcp.
> 
> While this can be useful, it would be nice if there was also an
> exception-mechanism, instead of just a "lo" and "high" value.
> If I want to run a web server without needing root, then I'd like
> to allow port 80, and not an entire range of 0-80 or 80-1024.

You also need to change daemons -- openssh's sshd checks to see if it is
being run by root, rather than just let the OS do it.

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