We are using sonicwall NSA 2400, it always keep said my External port
!= internal port,
How to check my port is be symmetric? isit any log will show?
Tony Graziano wrote:
On Wed, Feb 3, 2010 at 3:18 PM, Winson
(Elabram) <winson.k...@elabram.com>
wrote:
Dear
all Expert !
Hi i stuck in the firewall NAT mapping for my Sipbridge - ISTP .
I try direct use the modem connected to sipXecs and open the port
5060,5080, 30000-31000,16384-16482(ISTP) is wan work.
after i plug in the firewall, the softphone show me is error 408,time
out.
Then i check the sipbridge.log it show me:
Remote Host:202.85.243.87---- Port: 5060----\nREGISTER sip:sip.pennytel.com
SIP/2.0\r\nCall-ID:......
Remote Host:202.85.243.87---- Port: 5060----\nSIP/2.0 401
Unauthorized\r\nCall-ID: ........
Remote Host:202.85.243.87---- Port: 5060----\nREGISTER sip:sip.pennytel.com
SIP/2.0\r\nCall-ID:.........
Remote Host:202.85.243.87---- Port: 5060----\nSIP/2.0 200
OK\r\nCall-ID:........
.... WARNING External port != internal port your NAT may not be
symmetric.
It is because i did'n set the NAT policy from my firewall (sonicwall)
will become this problem?
What is this? In order to connect the media stream (default
30000-31000 udp), the firewall "must" be symmetrical, if it leaves
(rtp/media) on port 30123 then it must come back on port 30123, for
instance.
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