4 ms·

Boot from a read only device, either DVD-ROM. Copy data through a USB data diode. That is airgapped, but really expensive.

• pnutjam 7y ago
  Get a USB sata drive caddy and mount before backing up, unmount afterwards. Swap the drive.
• anticensor 7y ago
  Is it possible to have a unidirectional USB connection? USB is strictly master-slave.
  • ryacko 7y ago
    Yes, just like how it is possible to firewall a TCP connection. https://www.cru-inc.com/products/wiebetech/usb-datadiode/ https://www.cru-inc.com/products/wiebetech/usb-datadiode/
  • rasz 7y ago
    no, OP meant filtering write commands
• rasz 7y ago
  "USB DataDiode" is a brand name of write blocker, all it does is block write(6,10,12) SCSI-commands https://www.os3.nl/_media/2015-2016/courses/ccf/ccf_tom_frank.pdf https://www.os3.nl/_media/2015-2016/courses/ccf/ccf_tom_fran...