Best Network Security Software for Linux

Protect your business against damaging data breaches and easily comply with security frameworks like ISO 27001, GDPR, and HIPAA. Our software-only virtual private network easily integrates with your existing infrastructure to provide a flexible and scalable way to protect your organization. With our VPN Professional plan, you can securely access your LAN and SaaS resources by assigning and segmenting permissions to private dedicated VPN servers, allowing employees to access only what they need. With all plans, your network traffic is secured using strong AES-256 or ChaCha20 encryption. You can further strengthen your organization's security with enforced 2FA and seamless login through single sign-on (SSO) with SCIM support for automated user provisioning. Proton VPN's high-speed server network is one of the largest in the world and is part of a suite of open source end-to-end encrypted products from the makers of Proton Mail that are designed to keep your business secure.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Network Analyzer provides an in-depth look at all network traffic sources and potential security threats allowing system admins to quickly gather high-level information regarding the health of the network as well as highly granular data for complete and thorough network analysis. Network Analyzer provides a central view of your network traffic and bandwidth data as well as potential network compromises. The powerful home dashboard provides an at-a-glance view of critical netflow or sflow data sources, server system metrics, and abnormal network behavior for quick assessment of network health. Users can easily drill down to see specific information on individual IPs, source port, destination port, or any combination thereof. Network Analyzer’s advanced alerting and reporting capabilities provide IT staff with superior awareness of their network. Highly granular, down-to-the-packet data can be accessed and archived for further tracking and analysis.

This single, fully integrated solution conducts active, passive and agent-based assessments while its extensive flexibility evaluates risk according to each business. SAINT’s impressive, flexible and scalable scanning capabilities set it apart from many others in this space. SAINT has partnered with AWS, allowing its customers to take advantage of AWS’s efficient scanning. Should subscribers prefer, SAINT also offers a Windows scanning agent. Security teams can schedule scans easily, configure them with considerable occurrence flexibility and fine-tune them with advanced options. As a vulnerability management solution, SAINT Security Suite’s security research and development efforts focus on investigation, triage, prioritization, and coverage of vulnerabilities of the highest levels of severity and importance. Not willing to settle for just blanket coverage and raw data, our analysts focus on developing tools for what matters to our customers.

Axonius gives customers the confidence to control complexity by providing a system of record for all digital infrastructure. With a comprehensive understanding of all assets including devices, identities, software, SaaS applications, vulnerabilities, security controls, and the context between all assets, customers are able to mitigate threats, navigate risk, decrease incident response time, automate action, and inform business-level strategy — all while eliminating manual, repetitive tasks. Recognized as creators of the Cyber Asset Attack Surface Management (CAASM) category and innovators in SaaS Management Platform (SMP) and SaaS Security Posture Management (SSPM), Axonius is deployed in minutes and integrates with hundreds of data sources to provide a comprehensive asset inventory, uncover gaps, and automatically enforce policies and automate action.

Enginsight is an all-in-one cybersecurity platform made in Germany, combining threat detection and defense capabilities. The features are: Automated security checks, pentesting, IDS/IPS, micro segmentation, vulnerability scans, and risk assessments. It empowers businesses of all sizes to effortlessly implement and monitor robust security strategies through an intuitive interface. Scan your systems automatically and immediately recognize the security status of your IT infrastructure. 100% self-developed (security by design) and has no dependencies on third-party tools. Permanently scan your IT environment for existing devices and create a live image of your IT infrastructure. Automatic detection and unlimited IP inventory of all network devices, as well as their classification. Enginsight provides a comprehensive solution for monitoring and securing your Windows servers, Linux servers and end devices such as Windows PCs or Linux . Start your 15 day free trial now.

Sectrio was launched as Subex Secure in the year 2016 to meet the growing needs of businesses in securing their Internet of Things and Operational Technology footprint on a single platform. To meet this objective, Subex invested in building the world’s largest adaptable honeypot network ground-up while simultaneously building an agile product with features aligned to the needs of our growing customer base. Subex Secure was rebranded as Sectrio in September 2021 to reflect the arrival of the next phase of our product and innovation evolution. Today, Sectrio has deployments across North America, the Middle East, APAC, and Indian markets. Our customer base is spread across verticals. Sectrio also is home to the largest number of cybersecurity domain specialists including the industry’s leading threat research team.

Chariot is the first all-in-one offensive security platform that comprehensively catalogs Internet-facing assets, contextualizes their value, identifies and validates real compromise paths, tests your detection response program, and generates policy-as-code rules to prevent future exposures from occurring. As a concierge managed service, we operate as an extension of your team to reduce the burden of day-to-day blocking and tackling. Dedicated offensive security experts are assigned to your account to assist you through the full attack lifecycle. We remove the noise by verifying the accuracy and importance of every risk before ever submitting a ticket to your team. Part of our core value is only signaling when it matters and guaranteeing zero false positives. Gain the upper-hand over attackers by partnering Praetorian. We put you back on the offensive by combining security expertise with technology automation to continuously focus and improve your defensive.

The Infocyte Managed Detection and Response platform helps security teams proactively hunt, detect, and respond to cyber threats and vulnerabilities resident within their network—across physical, virtual, and serverless assets. Our MDR platform provides asset and application discovery, automated threat hunting, and on-demand incident response capabilities. Combined, these proactive cyber security practices help organizations control attacker dwell time, reduce overall cyber risk, maintain compliance, and streamline security operations.

MicroZAccess is a Smart Zero Trust Network Access (ZTNA) client in Desktop which securely authenticates the user and seamlessly connects the device to the Cloud through reliable, high performance and encrypted tunnels. Highlights: Peer to Peer Overlay model for improved privacy and performance Flexible Deployment - Host/Workload Agent & Gateway approach Integrated Device Trust and Superior Identity MFA based Access Super Simple to Deploy and Manage Platform approach for Comprehensive Security - Support in SD-WAN and SASE Stateful device compliance checks before, and during, a connection Granular policy enforcement

Remote workforce, BYOD assets, and third-party access have created a new security dilemma for organizations. Relying solely upon a VPN as security for remote workers and third-party access is insufficient to protect the network. While VPNs provide a degree of protection through encrypting inbound traffic, their security failure comes through providing full network access to users with no privileged access demarcation. RevBits ZTN encrypts, authenticates, and securely connects external users, over SSL/TSL, to internal network assets and applications to which they have specific access without granting full network access. Moving the network perimeter to the endpoint RevBits Zero Trust Network (ZTN) helps isolate and protect your internal assets. As the network perimeter moves to where the user is, RevBits Zero Trust Network (ZTN) helps isolate and protect internal network assets without the necessity of implementing complicated network segmentation.