Does shapeshifter-dispatcher support UDP?

[yamuk]

I ask because I ran into trouble when switching from TCP to UDP on Transport Obfs4. The client side seems to be working fine but OpenVPN failed to connect to the server.

What I have done were:

1. Add -udp on the comand line:
   -transparent -udp -server -state state -orport 127.0.0.1:1194 -transports obfs4 -bindaddr obfs4-165.227.xx.xxx:443 -logLevel DEBUG -enableLogging -extorport 127.0.0.1:3334
2. Change to UDP on both server.conf and .ovpn config file.
3. Add iptable rules to the server to allow UDP connection.

Have I missed anything?
Thank you for any advice.

Best,
Yamuk.
PS. Client is Windows7 and Server is Ubuntu 16.04

[dlshad]

Hi @yamuk

Can you share with me the OpenVPN error/log file output?

Best
Dlshad

[yamuk]

Hi Dlshad, Thanks for your reply. Attached please find the OpenVPN log file and the status of the cmd windows of the client. Thanks again for your help. Best, Yamuk. OpenVPN log file: Tue Dec 05 16:20:55 2017 OpenVPN 2.4.3 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] built on Jul 14 2017 Tue Dec 05 16:20:55 2017 Windows version 6.1 (Windows 7) 64bit Tue Dec 05 16:20:55 2017 library versions: OpenSSL 1.0.2l 25 May 2017, LZO 2.10 Enter Management Password: Tue Dec 05 16:20:55 2017 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.1:25341 Tue Dec 05 16:20:55 2017 Need hold release from management interface, waiting... Tue Dec 05 16:20:55 2017 MANAGEMENT: Client connected from [AF_INET]127.0.0.1:25341 Tue Dec 05 16:20:56 2017 MANAGEMENT: CMD 'state on' Tue Dec 05 16:20:56 2017 MANAGEMENT: CMD 'log all on' Tue Dec 05 16:20:56 2017 MANAGEMENT: CMD 'echo all on' Tue Dec 05 16:20:56 2017 MANAGEMENT: CMD 'hold off' Tue Dec 05 16:20:56 2017 MANAGEMENT: CMD 'hold release' Tue Dec 05 16:20:56 2017 Outgoing Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication Tue Dec 05 16:20:56 2017 Incoming Control Channel Authentication: Using 256 bit message hash 'SHA256' for HMAC authentication Tue Dec 05 16:20:56 2017 TCP/UDP: Preserving recently used remote address: [AF_INET]127.0.0.1:1234 Tue Dec 05 16:20:56 2017 Socket Buffers: R=[8192->8192] S=[8192->8192] Tue Dec 05 16:20:56 2017 UDP link local: (not bound) Tue Dec 05 16:20:56 2017 UDP link remote: [AF_INET]127.0.0.1:1234 Tue Dec 05 16:20:56 2017 MANAGEMENT: >STATE:1512490856,WAIT,,,,,, Cmd Window: @@@ Listening obfs4 127.0.0.1:1234 @@@ handling... Transport is obfs4 Received 8???dE???�D&0??^D2?8?r ??g?QR?g?z?.0???? ?Z&?h from 127.0.0.1 :56516 map[] Opening connection to 165.227.xx.xxx:443 Making dialer... recv: Open Dialing.... Received 8???dE???)??(?G+F??0}E??=??"0???g?????]n ?Z&?h from 127.0.0.1 :56516 map[127.0.0.1:56516:{<nil> true}] recv: waiting Received 8???dE???U?W&??S?$??n????b*e??t�?.??? ?Z&?h from 127.0.0.1:56 516 map[127.0.0.1:56516:{<nil> true}] recv: waiting C?f???/ ?Z&?h from 127.0.0.1:56516 map[127.0.0.1:56516:{<nil> true}] recv: waiting

[yamuk]

Hi I've edited my previous post to make it more readable. Awaiting your advice. Many thanks.

Best,
Yamuk.