Adaptation of access rules for a data interchange between a first network and a second network

A method for adapting access rules for a data interchange between a first network and a second network by the second network based on a service-specific integrity information item of the first network, wherein the first network processes data for carrying out a service and the service defines one or more components, the method comprising:

• transmitting a respective integrity status of each of the one or more components by each respective component of the one or more components via a communication link within the first network to a management unit (IM) of the first network;
• computing the service-specific integrity information item based on each respective integrity status by the management unit;
• and
• transmitting the service-specific integrity information item by a network access point of the first network to a receiver in the second network for adapting the access rules, wherein access by the receiver to each respective integrity status is prevented.