Open Source Alternatives to Cisco Umbrella

A DNS and cloud cybersecurity solution that stops threats before they reach users or networks. It provides DNS layer security to block malicious domains, IP addresses, and cloud applications before a connection is ever established. The product is used by organizations to secure internet connections and is evolving into a broader Security Service Edge solution that includes secure web gateway, cloud access security broker, and data loss prevention capabilities. It is deployed to protect users and IoT devices connecting to SaaS apps, private apps, and the internet. The system utilizes intelligence from Cisco Talos to identify known and emerging threats. It offers different tiers of protection ranging from basic DNS security to full secure private access for a complete zero trust approach. This software is designed for IT managers and security teams who need to manage connectivity and threat protection for a modern workforce.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Cisco Umbrella give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 2 open source alternatives to Cisco Umbrella. The most popular are AdGuard Home and Blocky. Most use the Apache-2.0 or GPL-3.0 license, and 2 offer an official Docker image.