Duo KB: Error starting userland proxy: listen tcp4 0.0.0.0:53: bind: address already in use

Problem While configuring the Duo Network Gateway (DNG) on a Ubuntu device for RDP, I came across the following error while trying to configure a DNS service: The error is presented because the Ubuntu system is using the UDP port…

Duo KB: There was an error communicating with the Duo authentication server 12007

Observed issue: While trying to login into a Windows system with Duo 2FA enabled and using local logon credentials, the following error was displayed. There was an error communicating with the duo authentication server 12007 Observed cause: This error occurs…