Best Network Security Software for Linux
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Compare the Top Network Security Software for Linux as of July 2025
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What is Network Security Software for Linux?
Network security software is a type of software that helps protect computers, networks, and data from malicious attacks and unauthorized access. It is typically used by businesses to protect their confidential information and keep systems safe. It can also be used by individuals to protect their personal information and devices from potential threats. Compare and read user reviews of the best Network Security software for Linux currently available using the table below. This list is updated regularly.
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1
OpenVPN
OpenVPN
OpenVPN’s scalable, easy-to-deploy solutions are built on our time-tested, industry standard open source protocol. With the ability to split traffic and only tunnel sensitive data, you won’t sacrifice internet performance or speed for security. With OpenVPN, you can say goodbye to your legacy VPN and traditional hardware and architecture that made it difficult to scale and grow. You’ll be able to harness next-gen VPN technology that grows with you and protects your business no matter where your team is working, whether from a tablet at their kitchen table, a laptop in a coffee shop, or a mobile phone at their desk.Starting Price: Free Up to 3 Users -
2
Control D
Control D
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. - Block malicious threats - Block unwanted types of content network wide (ads & trackers, IoT telemetry, adult content, socials, and more) - Deploy in minutes on fleets of devices using RMM - Manage clients using sub-organizations - Gain visibility on network events and usage patterns, with client level granularity - Re-route traffic via proxies (through DNS) for improved privacy and security - Enjoy superior UX and simplicity 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.Starting Price: $2/month -
3
Unimus
NetCore j.s.a. (Unimus)
Unimus is an on-premise Network Automation and Configuration Management (NCM) solution designed for fast deployment and ease of use. It improves network security by providing centralized visibility into configurations and alerting you to unauthorized changes with real-time notifications. Its full-featured API integrates with SIEM tools to boost visibility and support security operations. Compliance Reporting ensures configurations meet internal security policies and audit requirements. The Mass Config Push tool enables scheduled firmware upgrades, letting you patch vulnerabilities across the network without manual updates. Supporting 400+ device types from 150+ vendors, Unimus offers Network Automation, Change Management, and Config Auditing in a vendor-agnostic platform. It eliminates manual errors, strengthens security, and speeds up operations — all without requiring programming skills.Starting Price: $5.90 per device per year -
4
Proton VPN
Proton AG
Protect yourself online High-speed Swiss VPN that safeguards your privacy. Our secure VPN sends your internet traffic through an encrypted VPN tunnel, so your passwords and confidential data stay safe, even over public or untrusted Internet connections. Keep your browsing history private. As a Swiss VPN provider, we do not log user activity or share data with third parties. Our anonymous VPN service enables Internet without surveillance. We created Proton VPN to protect the journalists and activists who use Proton Mail. Proton VPN breaks down the barriers of Internet censorship, allowing you to access any website or content. Unlike other VPN services, Proton VPN is designed with security as the main focus, drawing upon the lessons we have learned from working with journalists and activists in the field. Regular VPN services can be compromised if their servers are under surveillance. Proton VPN prevents this by first passing user traffic through our Secure Core network.Starting Price: $6.99/user/month -
5
SpamTitan
TitanHQ
SpamTitan email security is an email spam filter for businesses, smbs, MSPs, and schools. SpamTitan email security blocks spam as well as phishing and day-zero attacks, viruses, malware, ransomware, and other email threats. Helps control mail flow, clean it, and protect against unwanted email. We provide easy-to-use yet advanced email security for businesses, smbs and MSPs that are Office365 friendly. SpamTitan - Premium functionality included: • CEO Impersonation protection • Phishing/ Spear phishing protection • Link analysis • Full Sandboxing • Zero Day Attacks protection • Mail Spooling • Spoofing protection • Malware and Ransomware protection • SPF/DKIM/DMARC checking • Encryption • Fully multitenant environment • Ability to rebrand the entire UI • Full REST API: • Comprehensive support and set up docs Try a FREE, fully supported trial of SpamTitan Email Security today.Starting Price: $2.14/user/month -
6
NinjaOne
NinjaOne
NinjaOne automates the hardest parts of IT, delivering visibility, security, and control over all endpoints for more than 20,000 customers. The NinjaOne automated endpoint management platform is proven to increase productivity, reduce security risk, and lower costs for IT teams and managed service providers. The company seamlessly integrates with a wide range of IT and security technologies. NinjaOne is obsessed with customer success and provides free and unlimited onboarding, training, and support. -
7
ManageEngine OpManager
ManageEngine
ManageEngine OpManager, as a network security monitor, provides real-time detection of network anomalies and potential security threats. It monitors device configurations, tracks unauthorized changes, and ensures compliance with security policies. With proactive alerting, OpManager helps identify suspicious traffic patterns, potential vulnerabilities, and performance issues, enabling quick response to mitigate risks. It also integrates with firewall and intrusion detection systems, enhancing network security by offering visibility into potential attacks and breaches.Starting Price: $95.00/one-time -
8
Delska
Delska
Delska (former DEAC European Data Center & Data Logistics Center) is a carrier-neutral data center and network provider in Northern Europe with 25 years of experience delivering reliable, personalized IT and network solutions in cloud computing, colocation, data security, network, and more. We own five data centers (one under construction, launching in 2025) in Riga and Vilnius, along with points of presence in Frankfurt, Amsterdam, and Stockholm. For quick IT infrastructure deployment in Riga, Vilnius and Frankfurt, we have created the self-service myDelska cloud platform. It offers fast, secure, and scalable solutions and, in the summer of 2025, along with the VM management, will also offer bare metal servers. Delska data centers stand out for their energy efficiency, operating at PUE under 1.3 and powered entirely by green energy. Our upcoming Tier III-certified, 10 MW data center in Riga will exemplify green construction.Starting Price: €10 -
9
ManageEngine EventLog Analyzer
ManageEngine
ManageEngine EventLog Analyzer is an on-premise log management solution designed for businesses of all sizes across various industries such as information technology, health, retail, finance, education and more. The solution provides users with both agent based and agentless log collection, log parsing capabilities, a powerful log search engine and log archiving options. With network device auditing functionality, it enables users to monitor their end-user devices, firewalls, routers, switches and more in real time. The solution displays analyzed data in the form of graphs and intuitive reports. EventLog Analyzer's incident detection mechanisms such as event log correlation, threat intelligence, MITRE ATT&CK framework implementation, advanced threat analytics, and more, helps spot security threats as soon as they occur. The real-time alert system alerts users about suspicious activities, so they can prioritize high-risk security threats.Starting Price: $595 -
10
UTunnel VPN and ZTNA
Secubytes LLC
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.Starting Price: $6/user/month -
11
MyChat
Network Software Solutions
Secure instant messaging system with own server that can work in local area network and over the Internet. Providing collaboration tools for employee engagement. Built-in knowledge base, important notifications with return receipts, Bulletin board, broadcast messages, flexible server management, the system for user rights to access MyChat features, voice/video calls, screen sharing calls, Kanban project management, conferences, private dialogues, extended contact list, available for all platforms: Windows, macOS, Linux, Android, iOS, WEB.Starting Price: $6/per user/one-time -
12
CacheGuard
CacheGuard Technologies
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.Starting Price: $9.99 per month -
13
ManageEngine Firewall Analyzer
ManageEngine
Firewall Analyzer helps manage and optimize firewall policies, automates firewall rule administration, tracks configuration, rule changes, helps schedule configuration backup, executes regular compliance audit checks, performs periodic security audits, generates real-time alerts for security events, tracks VPN usage, generates VPN reports, displays the current security status of firewalls, tracks employee internet usage, monitors to generate live, historical bandwidth reports, alerts when bandwidth is exceeded, collects, consolidates, and analyzes firewall logs to generate security, bandwidth reports.Starting Price: $395 -
14
NetFlow Analyzer
ManageEngine
NetFlow Analyzer is a comprehensive traffic analysis tool that leverages flow technologies to provide real-time visibility into network bandwidth performance. NetFlow Analyzer is primarily a bandwidth monitoring tool, which has optimized thousands of networks globally, offering a holistic view of your network bandwidth and traffic patterns. NetFlow Analyzer is a unified solution that collects, analyzes, and reports on your network's bandwidth usage, and by whom. NetFlow Analyzer is your partner in optimizing bandwidth usage across a million interfaces globally, as well as providing network forensics and network traffic analysis. Reconfigure policies with traffic shaping via ACLs or class-based policies to gain control of the applications that use the most bandwidth. NetFlow Analyzer leverages Cisco NBAR technology to give you deep visibility into Layer 7 traffic and recognize applications that use dynamic port numbers or hide behind known ports.Starting Price: $245 -
15
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 -
16
Imunify360
CloudLinux, Inc.
Imunify360 is a security solution for web-hosting servers. Imunify360 goes beyond antivirus and WAF and is a combination of an Intrusion Prevention and Detection system, a Application Specific Web Application Firewall, Real-time Antivirus protection, a Network Firewall, and Patch Management components in one security suite. Imunify360 is a fully-automated solution and it collects all statistics under an intuitive dashboard.Starting Price: $12 -
17
Noction Flow Analyzer (NFA)
Noction
Noction Flow Analyzer (NFA) is a network analytics, monitoring, and alerting tool capable of ingesting NetFlow, IPFIX, sFlow, NetStream, and BGP data. The NetFlow analyzer enables engineers to optimize their networks and applications performance, control bandwidth utilization, do the proper network capacity planning, perform detailed BGP peering analysis, improve security, and minimize network incidents response time.Starting Price: $299/month -
18
GoodAccess
GoodAccess
GoodAccess is a cybersecurity platform (SASE/SSE) that empowers medium-sized enterprises to easily implement Zero Trust Architecture (ZTA) in their infrastructure, regardless of its complexity or scale. By leveraging a Low-Code/No-Code approach, GoodAccess delivers a hardware-free, rapid deployment solution within hours or days, allowing companies to enhance their security without the need for in-house IT experts. Our platform ensures seamless integration with modern SaaS/cloud applications as well as legacy systems, protecting critical assets for remote and hybrid workforces. GoodAccess serves businesses with 50-5000 employees across diverse industries, particularly those adopting multi-cloud and SaaS environments. Start your 14-day full-featured free trial.Starting Price: $7 per user/month -
19
SafeDNS
SafeDNS
At SafeDNS, we are committed to creating a safer and more secure online environment for SMBs, enterprises, ISPs, MSPs, OEMs, and Education. We have a global footprint, making the internet safer for millions of users in over 60 countries. With years of experience in the field of cybersecurity and DNS filtering, we offer cutting-edge solutions to safeguard your digital life. At present, SafeDNS serves more than 4000 businesses and institutions, and tens of thousands of home users worldwide. We do: -Web content filtering. We help you block all dangerous or unwanted websites such as pornography, violence, child sexual abuse and similar categories. -Malware protection. We also have your back against malicious sites trying to breach user devices either with viruses or information theft intent. -Cloud service. Additionally, we provide you with a cloud filtering service that requires no additional hardware purchase or software installation.Starting Price: $0.9/user/month -
20
Datadog
Datadog
Datadog is the monitoring, security and analytics platform for developers, IT operations teams, security engineers and business users in the cloud age. Our SaaS platform integrates and automates infrastructure monitoring, application performance monitoring and log management to provide unified, real-time observability of our customers' entire technology stack. Datadog is used by organizations of all sizes and across a wide range of industries to enable digital transformation and cloud migration, drive collaboration among development, operations, security and business teams, accelerate time to market for applications, reduce time to problem resolution, secure applications and infrastructure, understand user behavior and track key business metrics.Starting Price: $15.00/host/month -
21
NextDNS
NextDNS
NextDNS protects you from all kinds of security threats, blocks ads and trackers on websites and in apps and provides a safe and supervised Internet for kids, on all devices and on all networks. Determine your threat model and fine-tune your security strategy by enabling 10+ different types of protections. Use the most trusted threat intelligence feeds containing millions of malicious domains, all updated in real-time. Go beyond the domain, we analyze DNS questions and answers on-the-fly (in a matter of nanoseconds) in order to detect and block malicious behavior. With usually only a few hours between domain registration and the start of an attack, our threat intelligence system is built to catch malicious domains earlier than classic security solutions. Block ads and trackers on websites and in apps, including the most devious ones. Use the most popular ads & trackers blocklists, millions of domains all updated in real-time.Starting Price: $39 per month -
22
N‑able N-sight RMM
N-able
N‑able N-sight RMM® is a cloud-based IT solution that makes it easy for MSPs to deliver valuable technology services within hours, not weeks or months. Clear graphical dashboards place alerts front and center so you can focus on what needs you most. Built-in remote access and security features help you support and protect from day one. And when you’re ready, grow your business with additional security layers and add-ons services to expand your offering. N‑able N-sight RMM features include remote access, network path visualization, automated monitoring and maintenance, prescriptive data analytics, data-breach risk intelligence, and more. N‑able N-sight RMM is also available for download as Android and iOS mobile apps to allow users to manage issues anywhere. -
23
GOOSE VPN
GOOSE
We are GOOSE VPN, the European VPN and we are on a mission! Together with you we provide control in your online life, so that you can enjoy the online environment safely and without limits. Find the best deals, compare prices worldwide and grab that local offer! VPN stands for Virtual Private Network. Think of it as a secure tunnel between your device and the internet. As soon as you are connected to a secure GOOSE VPN server, your internet traffic goes through an encrypted tunnel where no one can look inside, not even hackers, governments, or your internet provider. You move anonymously on the internet and you can choose your own location, which bypasses blockades, censorship and stalker pop-up ads. VPN stands for Virtual Private Network. Think of it as a secure tunnel between your device and the internet. As soon as you are connected to a secure GOOSE VPN server, your internet traffic goes through an encrypted tunnel where no one can look inside.Starting Price: €1,80 per month -
24
Cybereason
Cybereason
Together we can end cyber attacks at the endpoint, across the enterprise, to everywhere the battle moves. Cybereason delivers over-the-horizon visibility and high fidelity convictions of both known and unknown threats so defenders can leverage the power of true prevention. Cybereason provides the deep context and correlations from across the whole of the network to uncover stealthy operations and enable defenders to be expert threat hunters. Cybereason significantly reduces the time required for defenders to investigate and resolve attacks through both automated and guided remediation with just a click of the mouse. Cybereason analyzes 80 million events per second - that’s 100x the volume of other solutions on the market. Reduce investigation time by as much as 93% to eliminate emerging threats in a matter of minutes rather than days. -
25
SaltStack
SaltStack
SaltStack is an intelligent IT automation platform that can manage, secure, and optimize any infrastructure—on-prem, in the cloud, or at the edge. It’s built on a unique and powerful event-driven automation engine that detects events in any system and reacts intelligently to them, making it an extremely effective solution for managing large, complex environments. With the newly launched SecOps offering, SaltStack can detect security vulnerabilities and non-compliant, mis-configured systems. As soon as an issue is detected, this powerful automation helps you and your team remediate it, keeping your infrastructure securely configured, compliant, and up-to-date. The SecOps suite includes both Comply and Protect. Comply scans and remediates against CIS, DISA-STIG, NIST, PCI, HIPAA compliance standards. And Protect scans for vulnerabilities and patches and updates your operating systems. -
26
JumpCloud
JumpCloud
JumpCloud® delivers a unified open directory platform that makes it easy to securely manage identities, devices, and access across your organization. With JumpCloud, IT teams and MSPs enable users to work securely from anywhere and manage their Windows, Apple, Linux, and Android devices from a single platform. Everything in One Platform Grant users Secure, Frictionless Access™ to everything they need to do their work however they choose. Manage it all in one unified view. Cross-OS Device Management Manage Windows, macOS, Linux, iOS, iPad, and Android devices. One Identity for Everything Connect users to thousands of resources with one set of secure credentials. Comprehensive Security Enforce device policies, patches, MFA, and other security and compliance measures. Automated Workflows Connect to whatever resources you need, including Microsoft Active Directory, Google Workspace, HRIS platforms, and more.Starting Price: $9/user -
27
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 -
28
REVE Antivirus
REVE Antivirus
REVE Endpoint security provides robust network security solution for precise malware detection through device and application control. Facilitates remote installation, updating and scanning of all individual endpoint PCs. REVE EPS provides a flexible licensing solution due to which no. of protected endpoints can be scaled up as per the requirements anytime with zero license management efforts. Provides advanced security for all your endpoints, which are the Launchpad of malware attacks. Machine learning technology that strengthens defence against targeted attacks & zero day virus. Facilitates remote installation, updating, and scanning of all individual end point PCs.Starting Price: $19 per year -
29
Acunetix
Invicti Security
As the market leader in automated web application security testing, Acunetix by Invicti is the go-to security tool for Fortune 500 companies. DevSecOps teams can cut through the noise to uncover unseen risks and mitigate dangerous exploits, detecting and reporting on a wide array of vulnerabilities. With an industry-leading crawler that fully supports HTML5, JavaScript, and Single-page applications, Acunetix enables the auditing of complex, authenticated applications for deeper insight into an organization's risk posture. It's a leader for a reason: the technology behind Acunetix delivers the only product on the market that can automatically detect out-of-band vulnerabilities to enable comprehensive management, prioritization, and control for vulnerability threats by criticality. Plus, it's available both online and as an on-prem solution, integrating with popular issue trackers and WAFs so that DevSecOps teams don't have to slow down when building innovative apps. -
30
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.