The resources of the VPN appliance are basically limited, both the number of connections and the amount of transferred (and thus to be encrypted) data play a role. Therefore, use this connection carefully and avoid excessive loads. For example, transferring one terabyte of measurement and research data work on at home would have a negative impact on other users.

Another problem is that, if VPN is activated, connections from the home PC to services outside the CAU are also routed through the VPN tunnel. For this reason, the computer connected to the VPN tunnel should not use video streaming services in another window, for example, since these streams would also be routed and encrypted through the VPN appliance.