[SIPForum-discussion] how to create pin hole in NAT

[Brecl, Peter]

You will need a Session Border Controller in the network that will
assist with NAT traversal / NAT Fix-up (including symmetric NAT).
 
Alternatively, if you are looking for a small fix with a few users, you
could forward the VoIP RTP/UDP ports on your router. For this scenario
you will need to check the settings in your VoIP device and set it to
"behind NAT" configuration where you advertise your public IP (WAN side
of the router) address / ports in the SDP.
 
Peter

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of anilkumar mantena
Sent: Wednesday, April 11, 2007 8:57 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] how to create pin hole in NAT


Thank you surabh....
 
Does anyone help me how to solve my porblem..
 
Anilkumar Manthena

Saurabh Agarwal <sagarwal1981 at gmail.com> wrote:

	I think u need a TURN server for RTP data on symmetric NAT's.
	I am also new to SIP so my knowlendge is somewhat restricted.
	
	
	On 4/11/07, anilkumar mantena <anilkumarmanthena at yahoo.com>
wrote: 

		Hi
		 
		Thank you surabh.  But my problem is I'm able to
establish the session with the proxy using SIP.  I'm behind Symmetric
NAT.  I'm testing my application (VoIP) within my LAN (but using
Internet and SIP REGISTER/INVITE.  But i'm not able to send/receive RTP
packets.  For that, what I've to do?  I read that if you are behind
symmetric NAT you can't receive RTP packets if you use STUN.  Is it
correct?  Please provide me the solution. 
		 
		Thanks in advance.
		Anilkumar Manthena 
		
		
		Saurabh Agarwal < sagarwal1981 at gmail.com
<mailto:sagarwal1981 at gmail.com> > wrote:
		

			Hi,
			I guess whenever you will send a message through
the NAT it will automatically create the 
			pinhole in the NAT ,now it is the functionality
of NAT to receive incoming packets on that
			 pinhole and send  to you . 
			
			Thanks
			Saurabh
			
			
			On 4/11/07, anilkumar mantena <
anilkumarmanthena at yahoo.com <mailto:anilkumarmanthena at yahoo.com> >
wrote: 

				Hi
				 
				How to create pin hole in NAT? 
				How to create RTP no-op?
				 
				Thanks & Regards
				Anilkumar Manthena
				
				
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			-- 
			Thanks
			Saurabh Agarwal
			973-794-2837
			( Please call between 1-2Pm or preferably after
6:30 Pm on weekdays) 


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	-- 
	Thanks
	Saurabh Agarwal
	973-794-2837
	( Please call between 1-2Pm or preferably after 6:30 Pm on
weekdays) 


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