Duo Authentication Proxy Configuration Extra Quality

Windows Server 2016 or later (recommended), or various Linux distributions like CentOS 7, Red Hat Enterprise Linux 7+, and Ubuntu 16.04+.

In Duo Admin Panel:

To configure Duo Authentication Proxy, you'll need to set up the following components: duo authentication proxy configuration

Allow outbound communication on TCP/443 to Duo's cloud service. Windows Server 2016 or later (recommended), or various