Re: [MMUSIC] RTSP "alt-ports" are not mentioned in the RFC.

[Sean Sheedy <[e-mail]>]

I agree with this solution.  A couple of wording nits (interspersed):

On 03/13/2013 05:48 PM, Magnus Westerlund wrote:
> WG,
>
> I hereby proposes the following text
>
> In addition to the registered default ports, i.e. 554 (rtsp) and 322
> (rtsps), there are an alternative port 8554 registered. This port may
   (rtsps), an alternate port 8554 is registered.  Using this registered 
port

> provide some benefits from non-registered ports if a RTSP server is
provides some benefits over non-registered ...

> unable to use the default port. The benefits may include pre-configured
> security policies as well as classifiers in network monitoring tools.
>
> to be added in Section 10.2 after the first paragraph. Please comment if
> you see issues with this or thinks it is fine.
>
> Cheers
>
> Magnus
>
> On 2012-12-17 22:17, Ross Finlayson wrote:
>> (Grumple... I wish this mailing list were set up so that replies went to
>> the mailing list by default.  Resending to the whole mailing list
>> instead of just Magnus.)
>>
>>> The question is if this port number has any benefit at all.
>> Yes it does.  If a RTSP server cannot use port 554 (most likely because
>> it is running on a Unix system, but not as 'root'), then it can try
>> using port 8554 instead.  (FWIW, our RTSP server implementation - widely
>> used on the Internet - does this.)  As you noted, if a server uses port
>> 8554 (or any port other than 554), then this port number will need to be
>> included in the"rtsp://"  URLs that clients use.  But it's beneficial to
>> know - e.g., if you're managing a network's 'security' policy - that
>> RTSP will likely be used on either port 554 or port 8554 (rather than
>> either port 554 or some unspecified other port number).  Similarly, it's
>> useful for network monitoring tools to know that traffic on port 8554 is
>> likely to be RTSP.
>>
>


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Sean Sheedy
Staff System Software Engineer, Media and Communications Systems
[e-mail]  | 503-495-9454 (Phone)
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