3 ms·
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.
by 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 agoA 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 agoThere are hardware diodes. There is no physical way to write through those.
- bonzini 9y agoAs 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.