Duoauthproxy: !link!

Duoauthproxy is an open-source OAuth proxy server designed to streamline the authorization flow for multiple applications. It acts as an intermediary between your applications and the OAuth provider (e.g., Google, GitHub, Facebook), allowing you to manage authentication and authorization in a centralized manner.

In the early 2010s, Duo Security (now a part of Cisco) was growing rapidly. Their core product—two-factor authentication (2FA)—worked beautifully for modern applications: web apps, VPNs with SAML, and cloud services.

As adoption grew, so did the stakes. Hospitals, power grids, and banks started using the proxy to protect their most critical systems. Duo had to solve two terrifying problems: duoauthproxy

: It is lightweight, typically requiring only 1 CPU and 1-4 GB of RAM, but peak authentication volume is the most critical metric for scaling. Cisco Duo +3 AI can make mistakes, so double-check responses Copy Creating a public link... You can now share this thread with others Good response Bad response 8 sites Best practices for setting up the Duo Authentication Proxy for high ... Performance and Reliability. The Duo Authentication Proxy is a lightweight service that runs on either a Windows or Linux host. Th... Cisco Duo Duo Authentication Proxy Upgrade - theDXT Jan 3, 2026 —

Many enterprise systems were built before MFA became a standard. The Duo Authentication Proxy provides several key advantages: Duoauthproxy is an open-source OAuth proxy server designed

Since you are referring to the Duo Authentication Proxy (often used for on-premises RADIUS-to-Duo cloud integration), a major pain point for administrators is the lack of visibility into specific device friction or certificate expiry issues before users complain.

The is a specialized server (Windows or Linux) that receives authentication requests from your local infrastructure—such as VPNs, firewalls, and servers—via RADIUS or LDAP . Duo had to solve two terrifying problems: :

duoauthproxy is the duct tape and WD-40 of enterprise authentication—unseen, unglamorous, and absolutely essential for anyone running legacy systems in a modern threat landscape.