Re: Firewall traversal with explicit IP address calls

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Hi Carlos,

when you configure GnuGk as [Endpoint] to another gatekeeper, it will
use its own NAT traversal method if the parent is a GnuGk also. But as
you noted it can't use H.460.18 in that case.

Are you using the ForwardDestIP switch to forward the dialed IP ?
Right now we are doing the neighbor selection by the dialed prefix.
Maybe we need something to select neighbors by dialed IP, too ?

Regards,
Jan

Carlos Elotro wrote:
> Hi,
> 
> In our organization we have some video conference systems connected to the
> internal network,  and we are trying to configure a H.323 proxy to allow
> then to communicate with VC systems outside our organization through the
> Internet. To connect to then, our endpoint will dial the IP address of the
> destination.
> 
> We have placed a GnuGk in the DMZ network, and another one in the internal
> network, so the endpoints register to the internal gatekeeper, and the
> internal gatekeeper forwards the internet traffic to the external one.
> 
> We have set then as H.460.18 client/server using the [Neighbor:] section,
> and we have enabled H.460.18 in [RoutedMode] and RTPMultiplexing in
> [Proxy], because we want to open as little ports in the firewall as
> possible.
> 
> But the only way we have found so far to forward the calls with explicit
> external IPs from the internal to the external is setting the external as
> parent of the internal one, by using the [Endpoint] clause, and when we use
> this routing, it seems like it doesn’t use H.460.18 and RTPMultiplexing, so
> we have to open a lot of ports in the firewall.
> 
> Please, could someone help me to find a configuration that allow route
> explicit IP calls through the external gatekeeper using H.460.18 and
> RTPMultiplexing?
> 
> Thank you very much in advance,
> 
> C.B.


-- 
Jan Willamowius, jan@xxxxxxxxxxxxxx, http://www.gnugk.org/

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