A computer-based system for regulating entry of data into a protected system. The system can include a first processor configured to process and manage data for the computer-based system. The system can also include one or more indelible memories communicatively linked with the first processor for the computer-based system. Additionally, the system can include a second processor configured to process and manage data for the protected system, wherein the second processor for the protected system is communicatively linked to the first processor for the computer-based system. The first processor for the computer-based system can be configured to receive one or more parameters from the second processor, wherein the one or more parameters defines which data from a data stream can pass to the protected system. Also, the first processor can be configured to receive the data stream from one or more accessing systems The first processor can be further configured to filter the data stream based on the one or more parameters received from the second processor. Moreover, the first processor can be configured to transmit the filtered data stream to the second processor, wherein one or more of the receiving, the filtering, and the transmitting is performed by utilizing the one or more indelible memories.