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Do you mean Ethernet over HDMI? Even though there was a standard and special HDMI cables that claimed compatibility, I don’t think any devices actually implemen
by bofh23 6y ago
Do you mean Ethernet over HDMI? Even though there was a standard and special HDMI cables that claimed compatibility, I don’t think any devices actually implemented it. Well perhaps one device according to this security paper[1] which basically means it’s useless.
I control access by connecting a Samsung TV to my Ethernet network but keep it configured to use WiFi most of the time. I’ve never entered a WiFi password so the network is effectively disconnected until I configure the TV to use the wired connection.
The TV prompts me to use the wired connection when I reboot my router and the link drops and comes back up but I can cancel switching to wired at that point.
[1]: What the HEC? Security implications of HDMI Ethernet Channel and other related protocols
Andy Davis, Research Director NCC Group
https://research.nccgroup.com/wp-content/uploads/2020/07/44con_hdmi_ethernet_channel_andy_davis_ncc_group_slides.pdf https://research.nccgroup.com/wp-content/uploads/2020/07/44c...