Determine the NAT type based on Nat stun

Determining the NAT type

Download and install twisted and Zope
Http://twistedmatrix.com/trac/wiki/Downloads
Http://pypi.python.org/pypi/zope.interface/3.8.0#downloads

Download stunclient
Http://code.google.com/p/stunclient/

There is a subdirectory named stun, which is used to find the NAT type.
This Code comes from shtoom: http://divmod.org/projects/shtoom

Execute the stun. py file to log a file.On my computer)

01:23:30 [-] log opened.
01:23:30 [-] <class '_ main _. teststundiscoveryprotocol'> starting on 5061
01:23:30 [-] Starting protocol <__main _. teststundiscoveryprotocol object at 0x00edb190>
01:23:30 [-] startdiscover -- localaddress is 0.0.0.0
01:23:30 [-] localaddress is invalid!
01:23:30 [-] resolving A.ROOT-SERVERS.NET
01:23:30 [-] connecting UDP socket to 198.41.0.4
01:23:30 [-] Twisted. Internet. Protocol. datagramprotocol starting on 57131
01:23:30 [-] Starting protocol <twisted. Internet. Protocol. datagramprotocol instance at 0x00ee3828>
01:23:30 [-] connected UDP socket says 192.168.1.100
01:23:30 [-] (Port 57131 closed)
01:23:30 [-] stopping protocol <twisted. Internet. Protocol. datagramprotocol instance at 0x00ee3828>
01:23:30 [-] sending request 'bbf2c488eedcba1863238b76fbbdb1a 'with 1 avpairs to ('2017. 146.35.99', 216) (In State 1)
01:23:30 [-] sending request 'bcffaf59142c3cf2575d2fb6f06424' with 1 avpairs to ('192.59.75 ', 213) (In State 1)
01:23:30 [-] sending request '26e9d0804bc12a4037aa59ccbd75e49 'with 1 avpairs to ('192. 98.81.87', 192) (In State 1)
01:23:30 [-] sending request 'bbf2c488eedcba1863238b76fbbdb1a 'with 1 avpairs to ('2017. 146.35.99', 216) (In State 1)
01:23:30 [-] sending request 'bcffaf59142c3cf2575d2fb6f06424' with 1 avpairs to ('192.59.75 ', 213) (In State 1)
01:23:30 [-] sending request '26e9d0804bc12a4037aa59ccbd75e49 'with 1 avpairs to ('192. 98.81.87', 192) (In State 1)
01:23:30 [-] sending request 'bbf2c488eedcba1863238b76fbbdb1a 'with 1 avpairs to ('2017. 146.35.99', 216) (In State 1)
01:23:30 [-] sending request 'bcffaf59142c3cf2575d2fb6f06424' with 1 avpairs to ('192.59.75 ', 213) (In State 1)
01:23:30 [-] sending request '26e9d0804bc12a4037aa59ccbd75e49 'with 1 avpairs to ('192. 98.81.87', 192) (In State 1)
01:23:30 [stun] Got stun response to none from ('192.59.75 ', 213)
At 01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] mapped-address 116.48.48.225 14959
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] changed-address 213.192.59.93 3479
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] source-address 213.192.59.75 3478
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] sending request 'hangzhou' with 1 avpairs to ('192.59.75 ', 213) (In State 2b)
01:23:30 [stun] Ignoring belated stun response to 'bcffaf59142c3cf2575d2fb6f06424 'from ('192.59.75', 213)
01:23:30 [-] sending request '1fd789b6d02e4be456597e8be1df4a7a 'with 1 avpairs to ('192.59.75', 213) (In State 2b)
01:23:30 [stun] Ignoring belated stun response to 'bcffaf59142c3cf2575d2fb6f06424 'from ('192.59.75', 213)
01:23:30 [-] sending request '1fd789b6d02e4be456597e8be1df4a7a 'with 1 avpairs to ('192.59.75', 213) (In State 2b)
01:23:30 [stun] Got stun response to '1fd789b6d02e4be456597e8be1df4a7a 'from ('192.59.93', 213)
At 01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] mapped-address 116.48.48.225 14959
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] changed-address 213.192.59.93 3479
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] source-address 213.192.59.93 3479
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] Calling handlestunstate2b
01:23:30 [_ main __. teststundiscoveryprotocol (UDP)] 2B {'externaladdress': ('2017. 48.48.225 ', 14959),' _ altstunaddress ': ('2017. 192.59.93 ', 3479 )}
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] Stun finished, Results:
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] you're behind a <nattype fullcone>
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] and external address is ('192. 48.48.225 ', 116)
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] (Port 5061 closed)
01:23:30 [_ main _. teststundiscoveryprotocol (UDP)] stopping protocol <__main _. teststundiscoveryprotocol object at 0x00edb190>
01:23:30 [-] Main Loop terminated.