14 Dec
2005
14 Dec
'05
4:05 p.m.
yes, actually 'nat_flag' parameter its uncommented lines above, as I told in
my last post this configuration works very well, in fact I'am using it in
a production sip proxy that serve lots of UA´s like Linksys-PAP, Sipura,
Addpac, X-pro, Snom phones and asterisk, With those UA´s that support STUN
there is no problem because my Stun can find its public ip/port and then
openser will not detect a NATed client and do not enforce
rtpproxy/nathelper, the problem appears only for UA´s behind same nat and
this nat doesn't support hairpinning (send back data in the source direction
to reach the target), so this new solution using avp in combination with
nathelper and STUN will cover a 100% of Nated UA cases and I´d like to
complete and share my configuration that support other useful features the
can be useful for this community, I will appreciate your help in this issue.
thank you
Rafael
On 12/13/05, Norman Brandinger <norm(a)goes.com> wrote:
Hello Rafael,
I took a very quick look at your conifguration and noticed that you have
commented out the "nat_flag" line. This setting is documented here:
http://www.openser.org/docs/modules/1.1.x/registrar.html#AEN103 I
believe that you should, at a minimum, uncomment this line.
# modparam("registrar", "nat_flag", 6)
Your configuration looks as though it is based on information from the
iptel.org site. I would suggest that you also review the NAT example
configuration from the onsip.org site. The onsip.org configurations are
a little more current. The nice part of the onsip.org configurations is
that they are provided with line-by-line explanations.
Regards,
Norm
Rafael R. GV wrote:
12/13/2005
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Hi
thank you!, now i am using Openser, it was easy to move from ser, just
some minor changes like 'break' to 'return' etc, my nathelper
implementation is based on a ser example and it works very well, just
made some minor changes to set flag 6 and flag 7 to 'Register' and
'Invites' when 'nat_uac_test("19")' in order to try Tavis code
snippet, in my tests there is no audio when reset flag 6 and 7 after
detected the two clients behind the same NAT and can't hungup or
cancel calls properly, please someone see my cfg attached and send
some advice, what I am missing?
thanks
rafael
On 12/7/05, *Norman Brandinger* <norm(a)goes.com <mailto:norm@goes.com>>
wrote:
Hi Rafael,
You would use the "example code snippet" when you want to decide
whether
or not to use rtpproxy or mediaproxy based on the fact that both the
caller and the callee are behind the same NAT device. Please
review the
mailing lists as this topic has been discussed many times.
I added some additional comments in regard to the setting of flags
2 and
3 in the posted example at:
http://openser.org/dokuwiki/doku.php?id=avp_examples
Generally, I have found that if OpenSER fails to start with an error
indicating that the function can't be found, it's time to find the
correct module to add.
In response to your last question "etc." I suggest that you review
the
three web sites: openser.org
<http://openser.org>, iptel.org
<http://iptel.org> and onsip.org <http://onsip.org>. The last one
has
some really great material that explains
alot.
Regards,
Norm
Rafael R. GV wrote:
you
Hi
I am using nathelper/rtpproxy in ser , please see my ser.cfg
attached
> and tell me where do I have to use this code snippet? where did set flags
2 and 3?, what other modules I need?, etc.
thank you
Rafael
Lima-Peru
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