Re: [Ekiga-list] Symmetric NAT problem

[yannick <sevmek free fr>]

Hi,

I'm trying to help someone with the same problem (well i hope...).

I wonder if ekiga.net provides an outbound proxy ?

Alternativly, what public outbound proxy can we use wich will work with
ekiga.net ?

I found some hints on internet about this "outbound proxy" feature :

"that way, you are always making an (outgoing) connection to the
outbound proxy server; even when an incoming call arrives, your firewall
thinks that it is just a response to a packet you sent the proxy, so
allows it.

An "Outbound proxy" is a server somewhere on the public internet which
proxies your SIP traffic. It's called "outbound" because your client
constantly "pings" it, thereby making an outgoing connection, which your
firewall/NAT gateway will permit. Then when a call arrives at the proxy,
it responds, and your NAT gateway forwards the response to the client
that "originated" it, i.e. you. Otherwise, if an external machine tried
to initiate the connection, your NAT gateway would block it. Siproxd
does this more elegantly, but with considerably greater complexity."

Regards,
Yannick

Le jeudi 05 octobre 2006 �0:42 +0200, Damien Sandras a �it :
> Hi,
> 
> You will have to use a public outbound proxy.
> 
> Le mercredi 04 octobre 2006 �9:45 +0100, Paulo J. Matos a �it :
> > Hi all,
> > 
> > I have a symmetric NAT problem. I'm living in a student halls
> > currently and I'm connected to the university connection which
> > supposedly does not have any kind of firewall. However, during
> > detection I get a symmetric NAT problem and I cannot even register to
> > the account in ekiga.net due to timeout.
> > 
> > ekiga -d 4 registers nothing special:
> > $ ekiga -d 4
> > 2006/10/04 19:42:02.392   0:05.692                        ekiga
> > Detected audio plugins: ALSA,OSS
> > 2006/10/04 19:42:02.393   0:05.692                        ekiga
> > Detected video plugins: Picture,V4L2,V4L,1394DC,1394AVC
> > 2006/10/04 19:42:02.394   0:05.693                        ekiga
> > Detected audio plugins: ALSA,OSS
> > 2006/10/04 19:42:02.395   0:05.694                        ekiga
> > Detected video plugins: Picture,V4L2,V4L,1394DC,1394AVC
> > 2006/10/04 19:42:04.246   0:07.546                        ekiga
> > Detected the following audio input devices: Intel 82801CA-ICH3,Intel
> > 82801CA-ICH3 Modem,Default with plugin ALSA
> > 2006/10/04 19:42:04.247   0:07.547                        ekiga
> > Detected the following audio output devices: Intel 82801CA-ICH3,Intel
> > 82801CA-ICH3 Modem,Default with plugin ALSA
> > 2006/10/04 19:42:04.248   0:07.548                        ekiga
> > Detected the following video input devices: Logitech Notebook Deluxe
> > with plugin V4L
> > 2006/10/04 19:42:04.249   0:07.548                        ekiga
> > Detected the following audio input devices: Intel 82801CA-ICH3,Intel
> > 82801CA-ICH3 Modem,Default with plugin ALSA
> > 2006/10/04 19:42:04.250   0:07.549                        ekiga
> > Detected the following audio output devices: Intel 82801CA-ICH3,Intel
> > 82801CA-ICH3 Modem,Default with plugin ALSA
> > 2006/10/04 19:42:04.251   0:07.550                        ekiga
> > Detected the following video input devices: Logitech Notebook Deluxe
> > with plugin V4L
> > 2006/10/04 19:42:05.467   0:08.766                        ekiga Ekiga
> > version 2.0.2
> > 2006/10/04 19:42:05.468   0:08.767                        ekiga OPAL
> > version unknown
> > 2006/10/04 19:42:05.469   0:08.768                        ekiga PWLIB
> > version 1.10.1
> > 2006/10/04 19:42:05.469   0:08.769                        ekiga GNOME
> > support disabled
> > 2006/10/04 19:42:05.470   0:08.769                        ekiga
> > Fullscreen support enabled
> > 2006/10/04 19:42:05.470   0:08.769                        ekiga DBUS
> > support enabled
> > 2006/10/04 19:42:05.473   0:08.772                        ekiga Set
> > TCP port range to 30000:30010
> > 2006/10/04 19:42:05.474   0:08.773                        ekiga Set
> > RTP port range to 5000:5059
> > 2006/10/04 19:42:05.475   0:08.774                        ekiga Set
> > UDP port range to 5060:5100
> > 
> > Any ideas of what might be the problem?
> > 
> > Regards,
-- 
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