ARINC 628, Part 9 defines general architectural philosophy and aircraft infrastructure for the proper use and interface of various cabin information network related equipment. It specifies a generic on-board infrastructure with commercial server technology, high-speed data communication and exchange via wired and wireless LAN for a wide range of applications. Supplement 4 defines web-based interfaces for cabin control panels and recognizes current standards for commercial browsers and applications. It incorporates current network security practices, including reference to ARINC 842 Digital Certificates.