Monitoring installations for buildings, building complexes, open spaces or other monitoring areas can comprise a plurality of system components. These system components can, for example, be designed as door openers, door closers, turnstiles, monitoring cameras, fire detectors, etc. It is standard for the system components to be interconnected via a network such that signals and data streams may be exchanged in the form of information. The invention relates to a monitoring system (1) which comprises: as a first network, a local monitoring network (2) for an object (3) to be monitored, said at least one local monitoring network (2) having at least one terminal; a security control device (13), the local monitoring network (2) being able to be connected to said security control device (13), such that data may be exchanged, by means of a client connection via a second network (4) such that first server messages SN_1 can be sent from the security control device (13) to a terminal address EG and terminal messages EN can be sent from the terminal (7) to the server address SA_C; and at least one user device (19, 25) which can be connected to the security control device (13) by a user connection via the second or a further network (4, 18) such that second server messages SN_2 can be sent from the security control device (13) to a user address BA and user messages BN can be sent from the user device (19, 25) to one, or the, server address SA_C, SA_B. The security control device (13) comprises a device manager (14) which is designed to forward the terminal messages EN from the terminal (7) to the user address BA, as first server messages SN_1, and to forward the user messages BN from the user device (19, 25) to the terminal address EG, as second server messages SN_2, in order to achieve a user-terminal connection between the terminal (7) and user device (19, 25).