Type your AIT username and password then click “OK”.Start using VPN Connection: Click Tunnelblick icon and choose “Connect AIT_Net_vpn_ait_ac_th”.VPN Configuration successfully installed.Type your computer username and password to allow Tunnelblick to make changes on your computer.Choose “All Users” to allow all users in your computer to use this vpn configuration or choose “Only Me” to allow only your user to use this vpn configuration.Tunnelblick was successfully installed then double click on downloaded vpn profile “AIT_Net_vpn_ait_ac_th.ovpn”.Type your computer username and password to allow Tunnelblick to be install.Click “Open” to continue the installation.Install Tunnelblick software: Double click on Tunnelblick installation file then double click on Tunnelblick icon to start the setup.