I am currently setting up qubes on a motherboard with one ps/2 port which i would like to allocate for the keyboard.
I have one ps/2 mouse and a type A to ps/2 female active adapter which would allow me to connect the ps/2 mouse through a usb port.
To achieve without using the mouse proxy method i will release one usb port / controller back to dom0 just for the mouse function.
1. Is there is a risk of the firmware of a ps/2 mouse infiltrating dom 0 if attatched through usb port ?
**2.**Is there any risk of the ps/2 usb adapter itself infiltrating dom0 ?
I understand the risk outside of my own devices potentially being tainted that someone could plug a device into my computer while left unattended but i have solved this issue by building my entire machine into a locked steel enclosure meaning there is no possible way for someone with physical access to my workspace to access any usb ports on my machine. ( i am the only person who can plug in a usb device as it would be under total lock and key. )
So my question… Will a qubes machine with a usb qube and a single controller allocated to dom0 with a ps/2 mouse + ps/2 usb adapter attatched + physical security of usb ports give me the same security as full usb qube with all controllers attatched ? The only person who can utilise the usb ports are me due to the security enclosure i have implement on the computer itself. So i think its just a question of wether my ps/2 mouse and ps/2 usb adapter are trusted as they would be only devices utilizing a usb port on the entire machine…
Thanks you for any replies in advance.