portmap assigning wrong ports

[Dave Mitchell]

On Tue, Jan 18, 2005 at 01:12:49PM +0100, David Jansen wrote:
> Does anyone know how to tell portmap which ports to give out? I have now
> noticed a couple of times that some service fails after a reboot, and
> then it turns out that portmap has assigned a random portmapper to
> e.g. ypserv and that random number just happens to be the port another
> service needs. Like this morning:
> 
> Jan 18 09:35:46 maas dovecot: Fatal: 
> Jan 18 09:35:46 maas dovecot: listen(993) failed: Address already in use
> Jan 18 09:35:46 maas dovecot: dovecot startup failed

Ports just below 1024 are suppoosed to ephemeral - that is to say they are
a pool of temporary port numbers used by root processes for things like
the portmapper or rsh. If an application has been hard-coded to use port
993, then that application is probably misconfigured.

Dave.

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