3 ms·

Is this still true with 787? [1] indicates that it uses virtual links that are not physically separated. [1] - https://en.m.wikipedia.org/wiki/ARINC_429 https:

Is this still true with 787? [1] indicates that it uses virtual links that are not physically separated. [1] - https://en.m.wikipedia.org/wiki/ARINC_429 https://en.m.wikipedia.org/wiki/ARINC_429

bonzini 9y ago
The protection lies between that bus and the TCP/IP stack of the IFE. Data can go one way, and several feet of certification documents are there to ensure that.
- mulmen 9y ago
  A stack of paper on the ground is of little comfort to me in the sky. If there is a physical (TCP/IP!) connection between two systems there is a potential for communication between them. No amount of certification will ever make that as secure as an air gap.
  - tscs37 9y ago
    There are hardware diodes. There is no physical way to write through those.
  - bonzini 9y ago
    As parent said, communication on the avionics side happens on a specialized bus, to which the entertainment side has read access only, enforced either through hardware or through highly-certified software (Common Criteria EAL6 or even EAL7) on the secure side.