I am not sure if cisco IOS supports
hairpin traffic, but I think that’s your problem. It doesn’t show “supported”
in http://www.ietf.org/internet-drafts/draft-jennings-midcom-stun-results-02.txt.
From: Raymond Chen
[mailto:rchen@cityabove.net]
Sent: Tuesday, January 18, 2005
5:45 PM
To: 'Richard'
Cc: serusers@lists.iptel.org
Subject: RE: [Serusers] multiple
SIPURA behind same NAT
There is not firewall, we use cisco 7507
to perform NAT.
Ray
From: Richard
[mailto:richard@o-matrix.org]
Sent: Wednesday, January 19, 2005
11:41 AM
To: 'Raymond Chen'
Cc: serusers@lists.iptel.org
Subject: RE: [Serusers] multiple
SIPURA behind same NAT
What firewall do you have?
Your firewall probably has problems to
support hairpin traffic.
Richard
From: Raymond Chen
[mailto:rchen@cityabove.net]
Sent: Tuesday, January 18, 2005
4:56 PM
To: 'Richard'
Cc: serusers@lists.iptel.org
Subject: RE: [Serusers] multiple
SIPURA behind same NAT
We use SIPURA 2000 and rtpproxy. I
have attached the sip message log.
Ray
From: Richard
[mailto:richard@o-matrix.org]
Sent: Wednesday, January 19, 2005
10:27 AM
To: 'Raymond Chen'
Cc: serusers@lists.iptel.org
Subject: RE: [Serusers] multiple
SIPURA behind same NAT
What nat device do you have? Does it have
any sip helper module? Are you running rtpproxy? It will be helpful if you can
send a sip packet dump.
Richard
From:
serusers-bounces@iptel.org [mailto:serusers-bounces@lists.iptel.org] On Behalf Of Raymond Chen
Sent: Tuesday, January 18, 2005
2:59 PM
To: 'Matt Schulte'
Cc: serusers@lists.iptel.org
Subject: RE: [Serusers] multiple
SIPURA behind same NAT
Matt,
Both port use different sip port, and can
make calls at the same time. But still can’t get voice when call to
each other.
Raymond
From: Matt Schulte
[mailto:mschulte@netlogic.net]
Sent: Tuesday, January 18, 2005
9:08 AM
To: Raymond Chen;
serusers@lists.iptel.org
Subject: RE: [Serusers] multiple
SIPURA behind same NAT
If I had a guess I would say either the
NAT or rtp/media proxy is getting confused about which client is which.
Ignoring the problem for a second, can both sipura's make calls at the same
time? Are you using NAThelper for this with SER? You mentioned "without
proxy", this would mean port forwarding? Try this, make each sipura use a
diff range of RTP ports (in their config).
Matt