OpenSSH supports FIDO2 hardware keys for additional protection. The private key
is securely stored on hardware. The file in the ~/.ssh/ directory contains
only the credential id with other non-sensitive meta-data.
In this series the concept of containerization is presented by looking at the mechanisms behind the scenes. Before modern concepts like cgroups etc. are described, the main idea behind bundling an execution environment is introduced by using a chroot environment.
Distributions based on Ubuntu have
brltty enabled by default. Some braille
displays do not change the ids of those converters and therefore brltty claims
the serial device and no device file /dev/ttyUSBx is created. In the following
some solutions to this problem are presented.