On Sat, 18 Mar 2006 10:44:13 -0800, "Christian Huitema"
<[EMAIL PROTECTED]> wrote:
> > 1. Are well known ports archaic? If so, can we request that the
> IANA
> > do away with the distinction?
>
> I don't know whether I would use the word "archaic", but the distinction
> between < 1024 and >= 1024 is certainly Unix-specific. In the Windows
> operating systems, the port range 1-1023 is not special. Some Windows OS
> services use low port numbers, but not all. UPNP, for example, uses
> ports 1900 and 2500; the RPC applications use dynamic port numbers.
A more interesting question is this: what are the odds that a user
process will accidentally grab the port number before the system
process gets to it? The notion of a "privileged" port number is
certainly preposterous; that said, putting services in a range that
ordinary applications tend not to use has its merits.
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb
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