US Patent 12081516 Physically secured network access control devices and systems

A network security system includes a barrier surrounding an enclosure. The enclosure contains a first network and a first networked device connected to the first network. The barrier prevents the first network from breaching the enclosure and permits a second network to penetrate a first portion of the barrier. A container located within the enclosure mounts to the first portion of the barrier, such that a second portion of the container superposes the first portion of the barrier. The container permits the first network and the second network to enter the container. The container prevents the second network from breaching the container and entering a third portion of the enclosure located outside the container. A firewall device located within the container controls network traffic between the first networked device and a second networked device connected to the second network.