Best Network Security Software for Linux

UTunnel provides Cloud VPN, ZTNA, and Mesh Networking solutions for secure remote access and seamless network connectivity. ACCESS GATEWAY: Our Cloud VPN as a Service offers swift deployment of Cloud or On-Premise VPN servers. It utilizes OpenVPN and IPSec protocols, enables policy-based access control, and lets you deploy a Business VPN network effortlessly. ONE-CLICK ACCESS: A Zero Trust Application Access (ZTAA) solution that simplifies secure access to internal business applications. It allows users to securely access them via web browsers without the need for a client application. MESHCONNECT: This Zero Trust Network Access (ZTNA) and mesh networking solution based on WireGuard enables granular access controls to business network resources and easy creation of secure mesh networks. SITE-TO-SITE VPN: The Access Gateway solution lets you easily set up secure Site-to-Site tunnels (IPSec) between UTunnel's VPN servers and hardware network gateways, firewalls & UTM systems.

CacheGuard-OS transforms a virtual or bare metal machine into a powerful and easy to handle network appliance. It's a Linux based Operating System built from scratch and especially designed to Secure and Optimize the network traffic. Great care has been taken by CacheGuard-OS developers to select the best of the best Open Source technologies to integrate into CacheGuard-OS. The result is a robust and trustworthy solution that can be up and running within minutes. CacheGuard-OS integrates Open Source software such as but not limited to OpenSSL, NetFilter, IProute2, StrongSwan, ClamAV, Apache, ModSecurity, Squid and Open Source developments made by CacheGuard-OS developers.

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!

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.

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.