Abstract: Apparatus for interacting with a medical device which is suitable for connection into a communication network which comprises at least one insecure area and a secure area on the device side, wherein the apparatus comprises a transmission device for transmitting communication packets to and from the medical device via the communication network, it comprises a monitoring device for monitoring the state of the connection of the device to the network, and it comprises a breaker device for breaking an existing connection between the secure area and the insecure area of the network if, during the monitoring process, a state of the network connection is detected which poses a risk to a patient treated with the device or to the correct functioning of the device.