This paper presents a virtual learning environment for Mobile IP (Internet Protocol). The learning environment has been produced in a production circle of Virtual Polytechnic of Finland. Protocols and mechanisms for secure mobility in the Internet are surveyed. A detailed description of the development of the learning environment and the content of the Mobile IP animation is given. The chosen didactical approach and the graphical design of the learning platform are presented and motivated. The IT technology and the IT infrastructure needed to implement and use the learning platform are also described and assessed.