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NAT Port Forwarding


cylonraider
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I am new to the DIY VOIP system. I have been using Packet8 for many years. I haven't had to do anything special to make my Packet8 DTA function. I just plug it in and it connects to their servers and I have a dialton. But, I am not really happy with several factors, costs and features to name a few. So I started looking for various vPBX systems and I am really impressed with the simplicty of the AXON server. I know there are others out there that may be more complex and expensive, but I am looking for simple and cheap at this point.

 

I have a colocated server in a datacenter. I am running Win2003. I installed AXON and connected a callcentric account to the outbound lines. I setup a few extensions and I can log into those extensions with Express Talk from the server's desktop (via Remote Desktop). I am now trying to get the clients to connect from remote locations to the AXON server. On my local router/firewall, if I open port 5060 and point it directly to my workstation, I am able to get Express Talk to connect just fine. But the other computers in my network can't connect to AXON remotely. If I turn off the 5060 port forward, I can't connect to AXON.

 

The confusing thing to me is that I can connect to my Callcentric account just fine regardless of whether 5060 is forwarded or not. So my question is.. what is callcentric doing that I am not? I turned off my firewall on my AXON server so that I could rule out the firewall. I don't believe my datacenter is blocking any ports besides some SQL ports for security.

 

Other bits of info that might be helpful:

1)I have UPnP on my router. It is enabled.

2)ET says i have a symmetric NAT and that it can't use uPnP

3)ET says it can't connect to the default STUN servers. stun.fwdnet.net and stun.xten.com

3)I have tried entering in my network's pulbic IP and set port to 5060 and 8000

 

I feel that I am either just totally missing some aspect of this or my local router just won't accomodate this without some changes.

 

 

Thanks in advance to anyone who can shed some light on my issues.

CylonRaider

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Another observation....

 

I have been watching the Axon GUI. I have noticed that my extension 102 and 110 (the two that I setup on my desktop) are trying to connect every 6 seconds on very wide of port numbers. What does this behavior mean? I am still guessing my NAT isn't allowing the return of the packets back to TE to tell it that it's registered. I did add a lot of port ranges to my routers Special Application table. What else should I try?

 

Here are some samples:

 

11:51:08 Extension 102 is at: sip:102@65.5.196.166:20533

11:51:15 Extension 110 is at: sip:110@65.5.196.166:20539

11:51:22 Extension 110 is at: sip:110@65.5.196.166:20545

11:51:29 Extension 110 is at: sip:110@65.5.196.166:20547

11:56:08 Extension 102 is at: sip:102@65.5.196.166:20735

11:56:15 Extension 102 is at: sip:102@65.5.196.166:20742

11:56:22 Extension 102 is at: sip:102@65.5.196.166:20748

11:56:29 Extension 110 is at: sip:110@65.5.196.166:20759

11:56:29 Extension 102 is at: sip:102@65.5.196.166:20759

11:56:36 Extension 110 is at: sip:110@65.5.196.166:20769

11:56:36 Extension 102 is at: sip:102@65.5.196.166:20769

11:56:43 Extension 110 is at: sip:110@65.5.196.166:20772

11:56:43 Extension 102 is at: sip:102@65.5.196.166:20772

11:56:50 Extension 110 is at: sip:110@65.5.196.166:20777

11:56:50 Extension 102 is at: sip:102@65.5.196.166:20777

11:56:57 Extension 110 is at: sip:110@65.5.196.166:20780

11:57:04 Extension 110 is at: sip:110@65.5.196.166:20788

11:57:11 Extension 110 is at: sip:110@65.5.196.166:20794

12:01:50 Extension 102 is at: sip:102@65.5.196.166:20999

12:01:57 Extension 102 is at: sip:102@65.5.196.166:21001

12:02:04 Extension 102 is at: sip:102@65.5.196.166:21002

12:02:11 Extension 110 is at: sip:110@65.5.196.166:21010

12:02:11 Extension 102 is at: sip:102@65.5.196.166:21010

12:02:18 Extension 110 is at: sip:110@65.5.196.166:21017

 

22:26:47 Extension 110 is at: sip:110@65.5.196.166:41904

22:26:47 Extension 102 is at: sip:102@65.5.196.166:41904

22:26:54 Extension 110 is at: sip:110@65.5.196.166:41910

22:26:54 Extension 102 is at: sip:102@65.5.196.166:41910

22:27:01 Extension 110 is at: sip:110@65.5.196.166:41917

22:27:01 Extension 102 is at: sip:102@65.5.196.166:41917

22:27:08 Extension 110 is at: sip:110@65.5.196.166:41921

22:27:08 Extension 102 is at: sip:102@65.5.196.166:41921

22:27:15 Extension 110 is at: sip:110@65.5.196.166:41938

22:27:15 Extension 102 is at: sip:102@65.5.196.166:41938

22:27:22 Extension 110 is at: sip:110@65.5.196.166:41954

22:27:22 Extension 102 is at: sip:102@65.5.196.166:41954

22:27:29 Extension 110 is at: sip:110@65.5.196.166:41960

22:27:29 Extension 102 is at: sip:102@65.5.196.166:41960

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