Re: Reserving "special" port numbers in the kernel ?

Alan Cox (alan@lxorguk.ukuu.org.uk)
16 Nov 2002 02:43:58 +0000


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.

> As a result, when someone requests a privileged port using
> bindresvport(3), they may get this port back and bad things happen.

They have at least as much right to it as you do

> 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.

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