Abstract: A system for use in a network that includes a plurality of clients and a plurality of servers configured to implement service applications includes at least one interface configured to communicate with the clients and the servers, a memory that contains computer-readable and computer-executable instructions and an access control list with sets of associated client identification and destination service identification, and a processor coupled to the at least one interface and to the memory and configured to read the instructions, the instructions being configured to cause the processor to: analyze an incoming service-access request, received by the at least one interface, for source identification associated with a source of the service-access request and destination service identification associated with an intended destination of the server-access request, the source identification comprising at least one of network source address and a source port number, and the destination service identification comprisin