Debian 7 or later (Debian 9+ recommended).Ubuntu 16.04 or later (Ubuntu 18.04+ recommended).Red Hat Enterprise Linux 7 or later (RHEL 8+ recommended).

CentOS 7 or later (CentOS 8+ recommended).Windows Server 2012 or later (Server 2016+ recommended).The proxy supports these operating systems: Locate (or set up) a system on which you will install the Duo Authentication Proxy. This Duo proxy server will receive incoming RADIUS requests from your Barracuda SSL VPN, contact your existing local LDAP/AD or RADIUS server to perform primary authentication, and then contact Duo's cloud service for secondary authentication. To integrate Duo with your Barracuda SSL VPN, you will need to install a local Duo proxy service on a machine within your network. You should already have a working primary authentication configuration for your Barracuda SSL VPN users before you begin to deploy Duo. First Stepsīefore moving on to the deployment steps, it's a good idea to familiarize yourself with Duo administration concepts and features like options for applications, available methods for enrolling Duo users, and Duo policy settings and how to apply them. If your organization requires IP-based rules, please review this Duo KB article. Firewall configurations that restrict outbound access to Duo's service with rules using destination IP addresses or IP address ranges aren't recommended, since these may change over time to maintain our service's high availability. This application communicates with Duo's service on TCP port 443.

Setup barracuda ssl vpn on a mac