A server (115) having a communication link comprises an application execution environment, a random IP address generator application (135) executing within the application execution environment of the server to randomly select (205) an IP address, a communications interface configured to send outbound data or to receive inbound data thereby establishing the communications link in coordination with the random IP address generator application and a processor (150). Preferably, the processor is programmed to receive a request from a client (112 or 114) and process the request if an IP address randomly selected at the client synchronously matches the randomly selected IP address at the server. Additionally, the processor can be further programmed to ignore the request from the client if the IP address randomly selected at the client fails to synchronously match the randomly selected IP address at the server.