List of the Top 13 DNS Security Software for Linux in 2025

Equipped with cutting-edge cybercrime insights, sophisticated machine learning, and AI-driven defense mechanisms, Heimdal DNS Security Endpoint offers unmatched precision in safeguarding your organization against emerging threats. Enhance your business's security posture and maintain a proactive edge with our innovative DNS security offering.

Control D is a versatile DNS filtering and traffic redirection service that utilizes advanced Secure DNS protocols such as DNS-over-HTTPS, DNS-over-TLS, and DNS-over-QUIC, while also accommodating traditional DNS. With Control D, users can effectively eliminate harmful threats, restrict various types of undesirable content across the network—including advertisements, trackers, IoT data, adult material, social media, and more—while also redirecting traffic through transparent proxies and monitoring network activities and usage patterns at a client-specific level. Consider it your own personalized Authoritative DNS resolver for the entire Internet, providing you with detailed control over which domains are allowed to be resolved, redirected, or blocked. This capability not only enhances security but also empowers users to tailor their online experience according to their preferences.

SafeDNS is dedicated to fostering a more secure and protected internet space for small to medium-sized businesses, large corporations, internet service providers, managed service providers, original equipment manufacturers, and educational institutions. Our reach spans across the globe, enhancing online safety for millions of individuals across more than 60 nations. With extensive expertise in cybersecurity and DNS filtering, we provide state-of-the-art solutions that ensure your online safety. Our advanced technologies are designed to shield you from threats such as malware, phishing scams, and unsuitable content, among other risks. Currently, SafeDNS supports over 4,000 organizations and individual users worldwide, demonstrating our commitment to a safer digital landscape for all. As we continue to innovate, our goal is to expand our services and enhance protection for even more users in the future.

Perimeter 81 is transforming the landscape of network security with its innovative SaaS solution that delivers tailored networking and top-tier cloud protection. By streamlining secure access to networks, clouds, and applications for today's distributed workforce, Perimeter 81 empowers businesses of all sizes to operate securely and confidently within the cloud. Unlike traditional hardware firewalls and VPNs, Perimeter 81 offers a cloud-based, user-focused Secure Network as a Service that utilizes Zero Trust and Software Defined Perimeter security frameworks. This modern approach not only enhances network visibility but also ensures effortless integration with leading cloud providers and facilitates smooth onboarding for users. The result is a comprehensive security solution that adapts to the needs of contemporary organizations while promoting a more agile and secure working environment.

WebTitan serves as a DNS-based web content filtering system and security layer designed to defend against cyber threats, including malware, ransomware, and phishing attacks, while also offering detailed control over web content. The WebTitan Cloud for Wi-Fi is specifically tailored for cloud-based content filtering in Wi-Fi settings, addressing the risk of guests encountering inappropriate websites and harmful malware. This solution enables you to manage the type of content accessible to users, fostering a secure internet browsing environment while generating reports on network activity for your organization. Powered by an advanced AI-driven real-time content categorization engine, WebTitan combines top-notch antivirus capabilities with cloud infrastructure, making it a perfect fit for organizations seeking robust protection with minimal upkeep. Furthermore, WebTitan Cloud is designed to be low maintenance and can be implemented in just five minutes, effectively preventing users from accessing undesirable online content. Take advantage of WebTitan's free trial today, complete with full support to help you get started seamlessly.

Finding data to illustrate the indifference some have towards malware can be quite challenging. While individuals might not know the specifics, there is a general consensus on the significant danger it poses. FlashStart effectively mitigates risks from botnets, ransomware, malware, and various other threats through premium, global protection channels. Users can also implement content filtering to restrict access to any web material deemed inappropriate. Such sites can pose risks that are either dangerous, distracting, or unwholesome. The Pro+ version comes with a secure app that can be downloaded easily. Centralized FlashStart protection safeguards all devices whether at home, in a cafe, or elsewhere, without requiring a router. The system is designed to tailor the filter to suit personal preferences. Rather than being a bulky appliance, it operates as a lightweight application compatible with existing end-user IT systems. This setup ensures a swift performance with latency under 5ms, enhancing user experience. Ultimately, the goal is to provide a seamless and secure browsing experience for everyone.

NextDNS provides extensive protection against a variety of security threats by efficiently blocking ads and trackers on websites and apps, all while ensuring a safe and monitored internet experience for children across all devices and networks. You have the ability to evaluate your security requirements and personalize your protection by enabling more than ten distinct safety features. By integrating trustworthy threat intelligence feeds that encompass millions of malicious domains and are continually updated, you can significantly fortify your defense strategies. Our system surpasses conventional tracking methods by analyzing DNS queries and responses in real time, which facilitates the rapid detection and prevention of harmful activities. Since there is often a narrow timeframe of just hours between the registration of a domain and its potential use in an attack, our sophisticated threat intelligence framework is specifically designed to identify harmful domains more effectively than conventional security measures. Furthermore, by utilizing the most popular ad and tracker blocklists that feature millions of constantly updated domains, you can successfully eliminate ads and trackers from both websites and applications, including the most advanced ones. In summary, NextDNS equips users with the necessary tools to create a customized and safer browsing environment that meets their individual security needs, thereby enhancing overall online experience.

DNSFilter is a cloud-oriented DNS security solution aimed at shielding users from harmful websites, phishing schemes, and unsuitable content in real time. Leveraging its AI-driven Webshrinker technology, it perpetually analyzes and classifies web domains to maintain current threat defenses. The platform supports various deployment options, including configurations without agents and dedicated clients compatible with multiple operating systems, making it suitable for both onsite and remote work situations. It features comprehensive reporting, adjustable filtering rules, and compliance assistance for legislation such as CIPA, which makes DNSFilter particularly beneficial for sectors like education, healthcare, and corporate security. Additionally, its global Anycast network boosts speed and reliability, ensuring uninterrupted protection while maintaining optimal browsing performance. By prioritizing user safety and adaptability, DNSFilter stands out as a robust choice for organizations seeking to enhance their cybersecurity measures.

Fortinet emerges as a key global player in the cybersecurity sector, notable for its comprehensive and integrated approach to safeguarding digital infrastructures, devices, and applications. Founded in 2000, the organization provides a wide range of products and services, including firewalls, endpoint protection, intrusion prevention systems, and secure access solutions. A cornerstone of its offerings is the Fortinet Security Fabric, a unified platform that seamlessly combines various security tools to enhance visibility, automation, and provide real-time threat intelligence across the entire network. Renowned for its dependability among businesses, government agencies, and service providers worldwide, Fortinet prioritizes innovation, scalability, and performance, thereby reinforcing its defenses against the constantly shifting landscape of cyber threats. In addition to its protective capabilities, Fortinet’s dedication to enabling digital transformation and ensuring business continuity highlights its essential role within the cybersecurity landscape, positioning itself as a trusted partner for organizations striving to navigate modern security challenges effectively. With a focus on proactive measures and cutting-edge solutions, Fortinet continues to adapt and evolve to meet the demands of an increasingly complex digital world.

A DNS (Domain Name System) changer transforms web addresses like Surfshark.com into the numerical IP addresses necessary for devices to communicate effectively. Your default DNS provider is often your Internet Service Provider (ISP), which can track your online behavior and store your browsing records. By opting for a DNS changer, you can significantly boost your privacy since it encrypts your DNS queries and enables connections to public DNS servers from external providers. Adjusting your DNS settings is quite easy; you can do this manually through your device’s Wi-Fi settings by modifying the network configuration. For added convenience, the Trust DNS app offers a user-friendly solution, allowing you to change DNS servers with a single tap. There are two main ways to use the Trust DNS app: you can either enable its server for enhanced browsing privacy or connect to one of several free third-party DNS servers that provide additional features like content filtering, ad blocking, and malware protection. This variety of options ensures that users can select the solution that best fits their preferences while improving their overall online experience. Ultimately, utilizing a DNS changer not only safeguards your privacy but also enhances your internet browsing efficiency.

A modern approach to DNS-based content control and security enables individuals to effectively oversee what is accessible on the internet. This innovative solution proves especially advantageous for households and functions as a powerful asset for organizations as well. CleanBrowsing offers a DNS filtering system that is crafted to create a secure browsing environment by blocking unexpected content. It achieves this by intercepting domain requests and restricting access to sites based on your chosen filtering settings. For example, the free family filter successfully blocks pornographic, inappropriate, and adult content while still allowing safe access to widely used platforms such as Google, YouTube, Bing, and DuckDuckGo. The service provides three distinct filtering options aimed at a diverse global audience—these include the Security, Adult, and Family filters. The Family filter not only restricts adult and inappropriate material but also enforces Safe Search protocols on search engines like Google, Bing, and Yandex. Conversely, the Security filter is specifically designed to minimize the risk of encountering harmful websites, contributing to a more secure online experience overall. By employing these various tools, users can cultivate a personalized internet space that reflects their unique preferences and values, ultimately enhancing their online safety and satisfaction.

Enhance your network's defenses against potential threats with DNS Safeguard, a cloud-driven Domain Name System (DNS) security solution specifically crafted to protect your organization from malware, ransomware, and phishing attacks, no matter where your users connect to the internet, including situations where they are outside the corporate network or not using a VPN. This cutting-edge service proactively detects and prevents unsafe internet connections before they happen, making it a vital resource for businesses aiming to avoid dangerous encounters with suspicious websites. It is especially advantageous for remote offices and mobile employees who access the internet directly, bypassing the added security of a VPN. Additionally, organizations in search of an effective and economical preventive security solution will find that DNS Safeguard is straightforward to deploy. By offering DNS-layer security, this solution improves visibility and protects your users both within and beyond the network, effectively neutralizing threats across any port or protocol before they can jeopardize your network or devices. Ultimately, with its forward-thinking strategy, DNS Safeguard provides your organization with the means to sustain a secure digital landscape amidst the growing complexities of cyber threats, ensuring peace of mind for all users.

The iboss Zero Trust Secure Access Service Edge (SASE) transforms the way modern enterprises approach network security by facilitating secure and swift direct-to-cloud connections. Central to iboss Zero Trust SASE is the implementation of stringent access protocols that guarantee only verified and permitted users and devices gain access to network resources, irrespective of their physical location. This is accomplished through a robust array of security services founded on the principle of "never trust, always verify," which encompasses advanced threat protection, malware defense, data loss prevention (DLP), CASB, RBI, ZTNA, and real-time examination of encrypted traffic. Designed with a cloud-native foundation, iboss Zero Trust SASE offers unmatched visibility into user activities and sensitive data exchanges, streamlining the journey toward a secure digital transformation. This modern solution empowers organizations to implement a more adaptable, perimeter-less security approach, accommodating the fluid work environments characteristic of today's workforce. Ultimately, with iboss Zero Trust SASE, businesses can confidently leverage cloud technologies and mobile work arrangements while maintaining robust security measures, thereby achieving an essential equilibrium between operational efficiency and protective strategies in the rapidly changing cyber landscape. Furthermore, this innovative architecture not only addresses current security challenges but also prepares organizations for future threats, ensuring resilience in an increasingly digital world.