Greetings. 

Thanks for the response!

I am using 0.6.1. It's easy enough to try the latest 0.6.2 version, so I
will pull that down.

Single-homed. I do have a 2nd external interface, but I've taken it down to
reduce the problem set at the moment. Static ip address. 

Firewall configuration on the single EXTIP:

EXTOPEN="t22 t8088 u4569 t80 u5060 u10000:20000"


I've got to go back to the rtp traffic streams and make sure that the rtp
port(s) are below 20000.

Thanks again.
 
Ron Byer Jr.
NetWeave Integrated Solutions, Inc.
+1.732.786.8830 x120
 

-----Original Message-----
From: Tod Fitch [mailto:[EMAIL PROTECTED] 
Sent: Friday, November 21, 2008 12:35 PM
To: AstLinux Users Mailing List
Subject: Re: [Astlinux-users] nat

I am experimenting with AstLinux 0.6.1 on a net5501 but the topology  
is different in the my pbx is on the NATed LAN with most (but not all)  
of the phones. I have not seen an issue with the net5501 failing to  
handle the RTP stream, my issue is that on ENUM calls Asterisk is  
attempting a "native bridge" with my NAT/firewall/router does not allow.

Anyway, are you using 0.6, 0.6.1 or the latest 0.6.2 release candidate  
which I think is labeled as astlinux-0.6-2082 on
http://www.djhsolutions.com/astlinux/

Also, are you running "single homed" or do you have multiple  
interfaces online?

How is the firewall on your AstLinux box configured?

--Tod

On Nov 21, 2008, at 8:58 AM, Ron Byer Jr. wrote:

> I've started using the astlinux 0.6 on a net5501 in earnest  
> recently, and we have found ourselves in a world of hurt from a NAT  
> perspective. We have a few phones behind their own soho firewalls,  
> and the pbx is in the clear. 1-way audio, no-way audio  for these  
> NATted phones seems to be the deal.  The SIP traffic works fine,  
> even to the point of hangup. There just isn't any media stream.
>
>
>
> Until this is solved, I've set up another PC-based PBX, running  
> asterisk on CentOS, just for the NATted phones It works fine. Same  
> exact version of asterisk :: 1.4.21.2
>
>
>
> I've been debugging this for the past week, and have followed the  
> bread crumbs into the poll loop in ast_waitfor_nands. I can flip  
> between the two installs (astlinux 0.6 and CentOS) and track the  
> debug messages (including a ton of my own at this point) all the way  
> to expecting the first RTP packet. Both installs track exactly. The  
> CentOS side then starts picking up the rtp packets and bridging the  
> streams. The Astlinux side hangs in the poll until the hangup. The  
> poll wakes up on the SIP BYE message, which is very interesting.   
> Tcpdump shows the rtp packets banging into the box from the phone  
> and the ITSP, but the poll never wakes up until the hangup.
>
>
>
> I came across some list mail from a few months box about one-way  
> audio and NAT issues that would be solved(?) with an kernel update  
> to .25 and a new uCLIBC. Not sure if that is wishful thinking or  
> not. Also, my CentOS kernel version is 2.6.18, two points back from  
> my astlinux 2.6.20.
>
>
>
> Any thoughts/insight would be appreciated. I'm fresh out of ideas at  
> present.
>
>
>
>
>
> <image001.jpg>
>
>
>
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