Re: [Uta] Port 465
Eliot Lear <lear@cisco.com> Fri, 07 March 2014 13:06 UTC
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Date: Fri, 07 Mar 2014 13:06:31 +0000
From: Eliot Lear <lear@cisco.com>
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To: Chris Newman <chris.newman@oracle.com>, uta@ietf.org
References: <2A0EFB9C05D0164E98F19BB0AF3708C711FB9AAD89@USMBX1.msg.corp.akamai.com> <8691BA706C9BAB52D64A8444@96B2F16665FF96BAE59E9B90>
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Subject: Re: [Uta] Port 465
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Hi Chris, I did some quick checking with Toerless, who is the contact. The port is assigned for a specific use, which is URD, a transitional technology for IGMPv2/IGMPv3 & SSM. Cisco currently supports the use of the protocol, and perhaps as important, it is used as an intercept for *any* destination IP address on that port when URD is enabled. Eliot On 3/7/14, 11:38 AM, Chris Newman wrote: > --On March 7, 2014 5:33:24 -0500 "Salz, Rich" <rsalz@akamai.com> wrote: >> Some info. It's a pub-sub protocol for limited multicast used by cisco >> routers. >> >> > http://www.idonotes.com/IdoNotes/idonotes.nsf/dx/08172006023221PMCMIQT4.htm > (note the date tho) >> > http://www.cisco.com/c/en/us/td/docs/ios/12_2/ip/configuration/guide/fipr_c/1cfssm.html > > > Here's the current text on this topic in draft-newman-email-deep: > > ---- > IANA is asked to assign an alternate usage of port 465 in addition to > the current assignment using the following template ([RFC6335]): > ... > This is a one time procedural exception to the rules in RFC 6335. > This requires explicit IESG approval and does not set a precedent. > Historically, port 465 was briefly registered as the "smtps" port. > This registration made no sense as the SMTP transport MX > infrastructure has no way to specify a port so port 25 is always > used. As a result, the registration was revoked and was subsequently > reassigned to a different service. In hindsight, the "smtps" > registration should have been renamed or reserved rather than > revoked. Unfortunately, some widely deployed mail software > interpreted "smtps" as "submissions" [RFC6409] and used that port for > email submission by default when an end-user requests security during > account setup. If a new port is assigned for the submissions > service, email software will either continue with unregistered use of > port 465 (leaving the port registry inaccurate relative to de-facto > practice and wasting a well-known port), or confusion between the de- > facto and registered ports will cause harmful interoperability > problems that will deter use of TLS for message submission. The > authors believe both of these outcomes are less desirable than a wart > in the registry documenting real-world usage of a port for two > purposes. Although STARTTLS-on-port-587 has deployed, it has not > replaced deployed use of implicit TLS submission on port 465. > ---- > > I welcome discussion and socialization to port registry folks. > > - Chris > > _______________________________________________ > Uta mailing list > Uta@ietf.org > https://www.ietf.org/mailman/listinfo/uta > >
- Re: [Uta] Port 465 Eliot Lear
- [Uta] Port 465 Salz, Rich
- Re: [Uta] Port 465 Chris Newman
- Re: [Uta] Port 465 Ilari Liusvaara
- Re: [Uta] Port 465 Christian Huitema
- Re: [Uta] Port 465 t.p.
- Re: [Uta] Port 465 Eliot Lear
- [Uta] What's the right thing to do about Port 465? Keith Moore
- [Uta] What's the right thing to do about Port 465? Kurt Andersen
- Re: [Uta] What's the right thing to do about Port… Keith Moore
- Re: [Uta] What's the right thing to do about Port… Tony Finch
- Re: [Uta] Port 465 Christian Huitema
- Re: [Uta] Port 465 Eliot Lear
- Re: [Uta] What's the right thing to do about Port… t.p.
- Re: [Uta] What's the right thing to do about Port… Keith Moore
- Re: [Uta] Port 465 Keith Moore
- Re: [Uta] Port 465 Kurt Andersen
- Re: [Uta] Port 465 Joe St Sauver
- Re: [Uta] Port 465 Keith Moore
- Re: [Uta] Port 465 Kurt Andersen
- Re: [Uta] What's the right thing to do about Port… Chris Newman
- Re: [Uta] Port 465 Chris Newman
- Re: [Uta] What's the right thing to do about Port… Keith Moore
- Re: [Uta] What's the right thing to do about Port… t.p.
- Re: [Uta] What's the right thing to do about Port… Keith Moore