he guys i cannot connect to any vpn via network manager is there any configuration need to be done?
also when i run "sudo openvpn --auth-nocache --config ~/Downloads/openvpn-client/config-udp/A-USA-udp.ovpn "
the out put is like this : [sudo] password for mehdi:
Sat May 30 22:32:10 2015 OpenVPN 2.3.6 x86_64-unknown-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [MH] [IPv6] built on Dec 2 2014
Sat May 30 22:32:10 2015 library versions: OpenSSL 1.0.2a 19 Mar 2015, LZO 2.09
Enter Auth Username: **********
Enter Auth Password: *********
Sat May 30 22:32:19 2015 WARNING: No server certificate verification method has been enabled. See http://openvpn.net/howto.html#mitm for more info.
Sat May 30 22:32:19 2015 Socket Buffers: R=[212992->131072] S=[212992->131072]
Sat May 30 22:32:19 2015 UDPv4 link local: [undef]
Sat May 30 22:32:19 2015 UDPv4 link remote: [AF_INET]206.190.153.202:1900
Sat May 30 22:32:19 2015 TLS: Initial packet from [AF_INET]206.190.153.202:1900, sid=6989c508 9098cf3e
ad stuck in here and after a while it re-ask for username and password

what should i do i realy need to make vpn connections
Thanks in advance