In this post, I will show you how to use my Duo Authentication for Windows Logon PowerShell scripts to check whether Duo Win Logon is installed, install Duo Win Logon, or upgrade Duo Win Logon. Previously, I wrote the blog post Upgrading Duo Authentication for Windows Logon. That blog post covered how to upgrade Duo…
Duo Authentication Proxy is a very useful way to add MFA to LDAP and RADIUS. It is also a way to sync your users with Duo. You can install Duo Authentication Proxy on Windows or Linux. While older versions of Duo Auth Proxy typically keep working, a Duo certificate expires in February 2026, and you…
Cisco UCS can sometimes trigger a false positive alert of FFCH_ERROR_CARDS_ACCESS_ERROR on the FlexFlash controller, which typically has the fault ID of F1262. Depending on your setup, you should investigate the alarm appropriately. If, after your investigation, you determine that the fault is a false positive, the first step is to reset the FlexFlash controller.…
Microsoft recently introduced the public preview of External Authentication Methods in Microsoft Entra ID. I am very excited about External Authentication Methods as they finally allow third-party MFA providers like Cisco Duo to integrate better with Microsoft Entra ID (formerly Microsoft Azure AD). Microsoft has supported third-party MFA providers for years. The original method for…
Update The script below still works. However, the MSI installer for Duo Win Logon does not include the new Microsoft Visual C++ 2022 Redistributable dependency. For a safer upgrade, I created a new PowerShell script that uses the EXE installer for Duo Win Logon, which includes the dependency. My new post Install or Upgrade Duo…
I ran into an issue where some older Cisco Aironet APs (Access Points) stopped connecting to a Cisco WLC (Wireless LAN Controller). No config changes had been made and some of the Cisco Aironet APs would connect and some wouldn’t. All of them were the same model, the Cisco Aironet APs were able to ping…
Recently I needed to upgrade a Cisco Unified Computing System (UCS) system and while Cisco does have documentation about it. The process can be scary and could use more screenshots. Here is my step by step guide on how to upgrade a Cisco UCS via the Firmware Auto Install with the Cisco UCS Manager. Fully…
