OpenVPN Support Forum

hi, I´m new to open vpn. I´ve installed a openvpn Access server as hyper-v machine. runs pretty well and I´m able to connect with a remote client. question: what encryption type/strength is used by open vpn when I did the installation and configuration following this videocast
http://www.youtube.com/watch?v=nmCzujDd1d0 is the connection secure and encrypted?

thanks a lot