Do you necessarily require the auto NAT stuff? Perhaps you can try with FreeSwitchConsole.exe -nonat and then manually configure your router not to do anything silly with SIP traffic. Make sure you turn off any SIP ALG. The wiki has a list of some of the more popular routers and how to turn off the ALG:
http://wiki.freeswitch.org/wiki/Alg

Hope this helps.
-MC

On Mon, Nov 26, 2012 at 3:37 AM, Yihui Li <xyangni@gmail.com> wrote:
Hi,
I have downloaded the most recent git head and build it with VC2010 express today. But fs start up with some nat error and can not register to external sip server showing "error 408 request time out". what is wrong with it? Thanks.

Below is part of the log file
D:\Dev\fsgit\Win32\Debug>FreeSwitchConsole.exe
2012-11-26 11:13:59.312500 [INFO] switch_event.c:589 Activate Eventing Engine.
2012-11-26 11:13:59.343750 [WARNING] switch_event.c:563 Create additional event dispa
tch thread 0
2012-11-26 11:13:59.468750 [INFO] switch_nat.c:420 Scanning for NAT
2012-11-26 11:13:59.468750 [ERR] switch_nat.c:201 Error checking for PMP [init failed
]
2012-11-26 11:13:59.468750 [DEBUG] switch_nat.c:425 Checking for UPnP
2012-11-26 11:14:02.484375 [INFO] switch_nat.c:434 NAT detected type: upnp, ExtIP: '9
5.172.xxxxxx'
2012-11-26 11:14:02.484375 [ERR] switch_nat.c:258 Bind Error
2012-11-26 11:14:02.484375 [ERR] switch_nat.c:365 Unable to initialize NAT thread


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