Messages in this thread | | | Subject | Re: sunrpc port allocation and IANA reserved list | From | Ben Hutchings <> | Date | Tue, 10 Nov 2009 17:53:43 +0000 |
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On Tue, 2009-11-10 at 11:43 -0600, Chris Friesen wrote: > By default sunrpc ports are allocated at random in the range 665-1023U. > However, there are many ports within this range which have been > reserved by the IANA (and others like port 921 which are not formally > reserved but are "well-known"). > > Given that a userspace application can be stopped and restarted at any > time, and a sunrpc registration can happen at any time, what is the > expected mechanism to prevent the kernel from allocating a port for use > by sunrpc that reserved or well-known? > > Apparently Redhat and Debian have distro-specific ways of dealing with > this, but is there a standard solution? Should there be? > > The current setup seems suboptimal.
I believe both RH and Debian are using the same implementation: <http://cyberelk.net/tim/software/portreserve/>.
Ben.
-- Ben Hutchings, Senior Software Engineer, Solarflare Communications Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked.
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