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Open VPN access

Ubuntu 12.04 (GNOME)

install network-manager-openvpn-gnome
Go to Network Manager → VPN Connections → Configure VPN → Add
type : OpenVPN → Create
Name : anything (e.g. KOIVPN)
GateWay : 149.156.109.66
Type : Certificates TLS
User certificate : username.crt , CA Certificate : ca.crt , Private key file: username.key
Private key pass-phrase : yours password
Advanced → Gateway port : 22 , LZO Compresion, TCP Connection
Save

install network-manager-openvpn
go to Network Manager (in system tray)→ Manage Connections, choose tab VPN → Add
type yours custom Connection name, in tab OpenVPN choose tab Required Settings
GateWay: 149.156.109.66
Connection type: X.509 Certificates
CA file: ca.crt, Certificate: username.crt, Key: username.key
Key password: yours password
go to tab Optional Settings
Gateway Port: 22
select Use LZO compression, Use TCP connection
OK, OK, open Network Manager once again and click Yours custom connection name in Connections