[cisco-voip] Expressway C&E issue

Erick Wellnitz ewellnitzvoip at gmail.com
Thu Apr 2 21:36:09 EDT 2015


We aren't doing advanced networking on either the c or e.

I'm guessing because we do nat on the e we need to configure the nat
reflection, is that a correct assumption?
On Apr 2, 2015 7:28 PM, "Charles Goldsmith" <wokka at justfamily.org> wrote:

> 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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> >
>
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