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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Reserving "special" port numbers in the kernel ?
References: <uel9mbcyi.fsf@unix-os.sc.intel.com>
	<1037414638.21937.20.camel@irongate.swansea.linux.org.uk>
From: Arun Sharma <arun.sharma@intel.com>
Date: 17 Nov 2002 08:37:19 -0800
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Alan Cox <alan@lxorguk.ukuu.org.uk> writes:

> On Sat, 2002-11-16 at 00:00, Arun Sharma wrote:
> > One of the Intel server platforms has a magic port number (623) that
> > it uses for remote server management. However, neither the kernel nor
> > glibc are aware of this special port.
> 
> I can't find it in the IETF standards documents either.

It's been registered as a well known port:

http://www.iana.org/assignments/port-numbers

[..]

> 
> > Has anyone run into this or similar problems before ? Thoughts on
> > what's the right place to handle this issue ?
> 
> Run your remote management daemon from xinetd, it'll then get the port
> nice and early in the system runtime.

The thing that's unique about our situation is that the daemon in not
user level. It runs at hardware/firmware level, so that you can
remotely administer the machine even when software is malfunctioning.

        -Arun

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