Mikrotik, OpenVPN and Windows
proto tcp-client remote [server ip address or host name] 1194 dev tap nobind persist-key ns-cert-type server tls-client ca ca.crt ping 10 verb 3 cipher AES-128-CBC auth SHA1 pull auth-user-pass dhcp-option DOMAIN yourdomainhere.loc route 10.0.0.0 255.0.0.0 route 172.16.0.0 255.240.0.0 route 192.168.0.0 255.255.0.0
Mikrotik, OpenVPN, Radius and IAS
The following video shows how to configure an IAS Remote Access Policy that allows OpenVPN on the Mikrotik to use Radius authentication.
You need to have the Internet Authentication Service installed already.
IAS was replaced by Network Policy Server in Windows 2008 and newer. The setup process is mostly the same.
<mediaplayer width='800' height='624'>http://files.bluecrow.net/howto/video/OpenVPN%20IAS%20Policy.flv</mediaplayer>