SoftEther VPN User Forum

When I connected to a server use "sudo openvpn configfile", it always return this:

Initializing openvpn connection ...
Sun Jun 8 09:04:20 2014 OpenVPN 2.3.4 x86_64-unknown-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [MH] [IPv6] built on Jun 8 2014
Sun Jun 8 09:04:20 2014 library versions: OpenSSL 1.0.1 14 Mar 2012, LZO 2.06
Sun Jun 8 09:04:20 2014 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Sun Jun 8 09:04:20 2014 Socket Buffers: R=[87380->131072] S=[16384->131072]
Sun Jun 8 09:04:20 2014 Attempting to establish TCP connection with [AF_INET]180.227.155.110:1389 [nonblock]
Sun Jun 8 09:04:21 2014 TCP connection established with [AF_INET]180.227.155.110:1389
Sun Jun 8 09:04:21 2014 TCPv4_CLIENT link local: [undef]
Sun Jun 8 09:04:21 2014 TCPv4_CLIENT link remote: [AF_INET]180.227.155.110:1389
Sun Jun 8 09:04:21 2014 Connection reset, restarting [-1]
Sun Jun 8 09:04:21 2014 SIGUSR1[soft,connection-reset] received, process restarting
Sun Jun 8 09:04:21 2014 Restart pause, 5 second(s)
^CSun Jun 8 09:04:23 2014 SIGINT[hard,init_instance] received, process exiting

I don't know why it always reset the connection, may you give me some advice?

Could you check the VPN server log? There is possibility that work Dos protection function.
And we need more information of your environment etc.
Please see here http://www.vpnusers.com/viewtopic.php?f=7&t=2790