David Timms wrote:
tony.chamberlain@xxxxxxxxx wrote:
This may be outside the scope of this list, but maybe someone will
...
i figure as long as I cannot ping the SIP phone from a different
network, through the router, the SIP phone will not be able to reach
the proxy machine, A.B.C.D.
Any suggestions how I might make that IP address (W.X.Y.Z) available
to the outside world?
If all parties are routed, then you should have no problem. But if you
are using a firewall/NAT, then the firewall has to know about the SIP
protocol {ie application layer gateway}, so that it can track and
proxy the extra connections that are formed between the devices.
DaveT.
I Dave T's comments are relevant and you use Cisco IOS as your firewall,
depending on the IOS version, you can add sip-awareness to it...
On your router, in "enable mode":
conf t
ip inspect name (firewallname) sip
you may also use sip-tls
Cheers
