A fixed port would probably work best from a firewall perspective.
On May 23, 2011 11:58 AM, "Mircea Carasel" <[email protected]> wrote:
> On Mon, May 23, 2011 at 2:37 PM, George Niculae <[email protected]> wrote:
>
>> Hi All,
>>
>> I'm investigating http://track.sipfoundry.org/browse/XX-9189 so I'm
>> resurrecting
>> http://thread.gmane.org/gmane.comp.telephony.pbx.sipfoundry.general/30441
>> discussion...
>>
>> I managed to recreate the issue on my machine by specifying the UDP
>> range 31000 - 44000 and restarting prompted services. Basically Joe's
>> statement
>> "sipxrls is binding to a udp port that is on the range of our RTP
>> (UDP) ports; which then prevents Media Relay from starting"
>> can be explained as: sipxrls starts before Media Relay and binds to
>> port 38428 (which is in the range of ephemeral ports for linux:
>> http://en.wikipedia.org/wiki/Ephemeral_port), then Media Relay is
>> started and tries to account ports in range 31000 - 44000 (including
>> 38428) but since 38428 is already taken it fails to start (as a test I
>> also started sipxrls and registrar after Media Relay and problem went
>> away).
>> As Joegen suggested we could ignore port if not available at Media
>> Relay startup and go check next port in range, however the symmitron
>> code works mostly with range of ports not with specific ports (meaning
>> that if a bad port at startup it won't know further that the port is
>> bad and will try to use it again later). While I agree this should be
>> the correct fix I feel that radically changing the symmitron code is
>> not what we want at the moment (or at least for 4.6).
>> Therefore I would suggest only to improve help text on config page and
>> to make admin aware about possible side effects when specifying RTP
>> ports in ephemeral range.
>>
> +1.
> Maybe, in addition, a global warning to be shown when a port from
ephemeral
> range is picked.
> Similar, for instance, with the error message that globally appears when a
> file replication failed
> Mircea
>
>>
>> Looking for some feedback,
>>
>> Thanks,
>> George
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>>
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