Best DNS Security Software for Linux of 2026

Control D is a customizable DNS filtering and traffic redirection platform that leverages Secure DNS protocols like DNS-over-HTTPS, DNS-over-TLS and DNS-over-QUIC, with support for Legacy DNS. With Control D you can: block malicious threats, block unwanted types of content network wide (ads & trackers, IoT telemetry, adult content, socials, and more), redirect traffic using transparent proxies and gain visibility on network events and usage patterns, with client level granularity. Think of it as your personal Authoritative DNS resolver for the entire Internet that gives you granular control over what domains get resolved, redirected or blocked.

WebTitan is a DNS Based Web content filter and Web security layer that blocks cyber attacks, malware, ransomware and malicious phishing as well as providing granular web content control. WebTitan Cloud for Wi-Fi is a cloud-based content filtering solution for your Wi-Fi environment. Wi-Fi guests can be exposed to unsuitable websites and malware. WebTitan Cloud for Wi-Fi allows you to control the content that can be accessed, creates a safe environment to access the internet, and provides your organization with reports regarding network usage. Our intelligent AI driven real time content categorization engine combines industry leading anti-virus and cloud based architecture. This makes the WebTitan Cloud DNS filter an ideal solution for organizations needing maximum protection and minimal maintenance. WebTitan Cloud is a low maintenance solution that can be set up in five minutes to stop your users from accessing inappropriate content online. Start your free Trial of WebTitan today, with full support included.

DNSFilter is a cloud-based DNS security platform designed to protect users from malicious websites, phishing attacks, and inappropriate content in real time. Using its AI-powered Webshrinker technology, it continuously analyzes and categorizes web domains to ensure up-to-date threat protection. The solution offers flexible deployment, including agentless configurations and dedicated clients for various operating systems, making it ideal for both on-premise and remote environments. With detailed reporting, customizable filtering policies, and compliance support for regulations like CIPA, DNSFilter caters to industries such as education, healthcare, and enterprise security. Its global Anycast network enhances speed and reliability, providing seamless protection without compromising browsing performance.