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Re: Reminder: WGLC Announcement for draft-ietf-tsvwg-iana-ports-08 - 26th November 2010

Lars Eggert <lars.eggert@nokia.com> Wed, 01 December 2010 11:05 UTC

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Subject: Re: Reminder: WGLC Announcement for draft-ietf-tsvwg-iana-ports-08 - 26th November 2010
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From: Lars Eggert <lars.eggert@nokia.com>
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Date: Wed, 01 Dec 2010 13:05:51 +0200
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To: Eliot Lear <lear@cisco.com>
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Hi,

On 2010-12-1, at 12:36, Eliot Lear wrote:
> As I recall, though, nobody really had a problem with dropping the
> distinction.  It's only there in some UNIX flavors; and the only real
> issue is on multi-user systems where the port could conceivably be
> grabbed by someone.  Realistically, that's not a concern because if it's
> important, there is something listening from start-up.

"only some Unix flavors" is severely understating the issue. I just tried MacOS, FreeBSD and Ubuntu Linux, and none of them let user process bind to ports below 1024.

I agree with you that the reasons for having separate port ranges are bogus, but the *reality* is that it *matters* whether your port is above or below 1024 on many deployed systems. And hence it matters for applicants what number they get.

Lars

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