Compare the Top DNS Security Software for Linux as of November 2025

What is DNS Security Software for Linux?

DNS security software enables organizations to protect their DNS against threats and malware. DNS security solutions streamline the process of securing DNS servers against attacks. Compare and read user reviews of the best DNS Security software for Linux currently available using the table below. This list is updated regularly.

  • 1
    Heimdal Endpoint Detection and Response (EDR)
    Heimdal® Endpoint Detection and Response is our proprietary multi-solution service providing unique prevention, threat-hunting, and remediation capabilities. It combines some of the most advanced threat-hunting technologies: - Next-Gen Antivirus - Privileged Access Management - Application Control - Ransomware Encryption Protection - Patch & Asset Management - Email Security - Remote Desktop - Threat Prevention ( DNS based ) - Threat Hunting & Action Center With 9 modules working together seamlessly under one convenient roof, all within one agent and one platform, Heimdal Endpoint Detection and Response grants you access to all the essential cybersecurity layers your business needs to protect itself against both known and unknown online and insider threats. Our state-of-the-art product empowers you to quickly and effortlessly respond to sophisticated malware with stunning accuracy, protecting your digital assets and your reputation in the process as well.
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    Starting Price: $0/month
  • 2
    Perimeter 81

    Perimeter 81

    Check Point Software Technologies

    Perimeter 81 is transforming the world of secure network access and helping businesses of all industries and sizes smoothly transition to the cloud. Unlike hardware-based firewall and traditional VPN technology, Perimeter 81’s cloud-based and user-centric Secure Network as a Service utilizes the Zero Trust approach and SASE model framework to offer greater network visibility, seamless onboarding, and automatic integration with all the major cloud providers. Named a Gartner Cool Vendor, Perimeter 81 is considered by industry leaders to be winning the “SASE space race". Network security doesn’t have to be complicated – join Perimeter 81 on a mission to radically simplify the cybersecurity experience!
    Starting Price: $8 per user per month
  • 3
    WebTitan

    WebTitan

    TitanHQ

    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 DNS filtering filters over 2 billion DNS requests every day and identifies 300,000 malware iterations a day. 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. This cloud based web filtering solution provides complete protection from online threats such as viruses, malware, ransomware, phishing and comprehensive content filtering. 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.
  • 4
    FlashStart

    FlashStart

    FlashStart Group Srl

    FlashStart is a global, cloud-based cyber security platform that specializes in DNS filtering with the support of artificial intelligence. It protects against malware and unwanted contents by classifying domains into eighty-five categories, using machine learning with high predictive capability and incorporating government blacklists and warnings for high-risk sites. It offers global coverage, thanks to Anycast Network, which is among the fastest and most stable in the world. It presents advanced and exclusive features, like geographically based protection. Easy installation, centralized multi-tenant management, filter customization, and maximum cost-effectiveness make FlashStart the optimal cloud solution for businesses, PAs, schools, households, etc.
    Starting Price: $0.90/month
  • 5
    DNSFilter

    DNSFilter

    DNSFilter

    DNSFilter is a cloud-based security solution that provides DNS-level protection against online threats and unwanted content. Leveraging its proprietary AI engine, Webshrinker, DNSFilter continuously scans and categorizes over 180 million websites, enabling real-time blocking of malicious domains, phishing sites, and inappropriate content. The platform offers flexible deployment options, including agentless setups and roaming clients for various operating systems, ensuring comprehensive coverage for both on-site and remote users. With features like intuitive reporting, customizable filtering policies, and compliance with regulations such as CIPA, DNSFilter serves diverse sectors, including education, healthcare, and enterprise environments. Additionally, its global Anycast network ensures rapid DNS resolution, enhancing both security and performance for its users.
    Starting Price: $20/month
  • 6
    Fortinet

    Fortinet

    Fortinet

    Fortinet is a global leader in cybersecurity solutions, known for its comprehensive and integrated approach to safeguarding digital networks, devices, and applications. Founded in 2000, Fortinet provides a wide range of products and services, including firewalls, endpoint protection, intrusion prevention systems, and secure access solutions. At the core of its offerings is the Fortinet Security Fabric, a unified platform that seamlessly integrates security tools to deliver visibility, automation, and real-time threat intelligence across the entire network. Trusted by businesses, governments, and service providers worldwide, Fortinet emphasizes innovation, scalability, and performance, ensuring robust defense against evolving cyber threats while supporting digital transformation and business continuity.
  • 7
    Verizon DNS Safeguard
    Stop threats before they reach your network with DNS Safeguard, a cloud-based Domain Name System (DNS) security solution. DNS Safeguard proactively protects your business from malware, ransomware and phishing attacks no matter where your users access the internet, even if they’re not on the corporate network or a VPN. As a cloud-based DNS security solution, DNS Safeguard can identify and block connections to unsafe internet destinations before a connection is made. Organizations wanting to block dangerous connections between users and potentially malicious websites Branch offices and mobile workers that connect directly to the internet without a VPN. Businesses and agencies that need powerful preventive security that is cost-effective and easy to deploy. DNS Safeguard provides DNS-layer security to improve visibility and protect your users on and off the network by stopping threats over any port or protocol before they reach your network or endpoints.
  • 8
    iboss

    iboss

    iboss

    iboss is a cloud security company that enables organizations to reduce cyber risk by delivering a Zero Trust Secure Access Service Edge platform designed to protect resources and users in the modern distributed world. Applications, data, and services have moved to the cloud and are located everywhere, while users needing access to those resources are working from anywhere. The iboss platform replaces legacy VPN, Proxies, and VDI with a consolidated service that improves security, increases the end-user experience, consolidates technology, and substantially reduces costs. Built on a containerized cloud architecture, iboss delivers security capabilities such as SWG, malware defense, Browser Isolation, CASB, and Data Loss Prevention to protect all resources via the cloud instantaneously and at scale. The iboss platform includes ZTNA to replace legacy VPN, Security Service Edge to replace legacy Proxies, and Browser Isolation to replace legacy VDI. This shifts the focus from protecting
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