Duo offers a relatively simple way to add support Duo two-factor auth to SSH sessions in multiple Linux Distributions. Here are my steps for Ubuntu Server. Create /etc/apt/sources.list.d/duosecurity.list with the following contents:deb [arch=amd64] https://pkg.duosecurity.com/Ubuntu focal main Create a user that corresponds to your username in Duo. Create admin group in Ubuntu.# groupadd admin Add your…