[cisco-voip] Expressway C&E issue

Charles Goldsmith wokka at justfamily.org
Thu Apr 2 21:27:40 EDT 2015


Erick, are you doing advanced networking on the C or NAT reflection
for the traversal?  Is your traversal connected?  I would check for
firewall drops when trying to connect if the traversal is connected.

On Thu, Apr 2, 2015 at 6:50 PM, Erick Wellnitz <ewellnitzvoip at gmail.com> wrote:
> Not a security or a firewall guy so please bear with me.
>
> We've opened up the ports as advised in this:
> http://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-1/Cisco-Expressway-IP-Port-Usage-for-Firewall-Traversal-Deployment_Guide-X8-1.pdf
>
> Now, the weird part is that with a jabber client on the internet we get no
> RTP with this configuration.  Only when we open any to the Expressway-E do
> we get RTP, however we don't get signalling to the jabber client on the
> internet.
>
> Are there any other ports we should be opening?
>
> I was under the impression that creating the UC Traversal zone opened up the
> logical channel between the C and the E so that everything outbound to the
> internet could get to the DMZ and out to the internet.  Am I
> misunderstanding?  Is there more configuration I need to piece together to
> make the solution whole?
>
> Thanks in advance!
>
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