Yubikey login:
^^^^^^^^^^^^^^
-please create /etc/udev/rules.d/92-yubikey.rules with the following content:
ACTION=="add", ATTRS{idVendor}=="1050", ATTRS{idProduct}=="0010", RUN+="/etc/door/door.sh"
SSH login:
^^^^^^^^^^
-in ~/.ssh/authorized_keys add to the first line:
no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty
-in /etc/passwd change the the default shell to door_ssh_login.sh