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Re: [Uta] Port 465

Kurt Andersen <kboth@drkurt.com> Mon, 10 March 2014 23:04 UTC

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Date: Mon, 10 Mar 2014 16:04:30 -0700
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From: Kurt Andersen <kboth@drkurt.com>
To: Keith Moore <moore@network-heretics.com>
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Subject: Re: [Uta] Port 465
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On Mar 10, 2014 9:35 AM, "Keith Moore" <moore@network-heretics.com> wrote:
>
> On 03/10/2014 11:30 AM, Eliot Lear wrote:
>>
>> Christian,
>>
>> On 3/10/14, 4:20 PM, Christian Huitema wrote:
>>>
>>> Routers running URD intercept all packets using port 465, regardless of
>>> destination.
>>> That particularity of the URD design seems to be the root of the
problem.
>>
>> No.  The root of the problem is that there are two services using the
>> same port.
>
>
> I don't think it matters how we state the "root of the problem". The
problem seems to be that even though there's widespread use of port 465 for
SMTPS, there is also a widespread conflicting use that is officially
associated with that port, and there's really no way that the two can
coexist gracefully.
>
> So we really need to use a different port for SMTPS.

I'd be interested to know how 465 was "taken away" from smtps without
sufficient notice to the community. I still think it is the right approach
to move urd rather than smtps. Has anyone asked Cisco about it?

--Kurt Andersen

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