Abstract: The present invention relates to an apparatus for interacting with a medical device (10) which is suitable for connection into a communication network (11) which comprises at least one insecure area (11b) and a secure area (11a) on the device side, wherein the apparatus comprises transmission means (12; 44, 45) for transmitting communication packets to and from the medical device (10) via the communication network (11), it comprises monitoring means (13; 42, 43) for monitoring the state of the connection of the device (10) to the network (11), and it comprises breaker means (14; 40, 41) for breaking an existing connection between the secure area (11a) and the insecure area (11b) of the network (11) if, during the monitoring process, a state of the network connection is detected which poses a risk to a patient treated with the device (10) or to the correct functioning of the device (10).