Access to many services or data is restricted to computers that have an IP address from the address space of the Otto-von-Guericke University Magdeburg (141.44.xxx.xxx). Computers with other addresses (e.g. public Internet Service Provider) are rejected. However, if you use a VPN access, your computer will communicate virtually via the tunnel with an IP address from the address space of the OVGU Magdeburg. In this way you are identified as a member of the OVGU Magdeburg and can access corresponding information.