Portnox delivers continuous, zero-trust access control for every identity, human and non-human, securing local network and remote access from a single, cloud-native platform. It continuously verifies access based on identity context, device posture, and risk signals, unifying passwordless authentication, policy enforcement, and automated response through one policy engine.
Built for distributed organizations, Portnox manages access for employees, contractors, service accounts, IoT/OT devices, and AI agents - including unmanaged and BYOD endpoints connecting from outside the traditional perimeter. Its cloud-native architecture replaces the on-premises appliances and legacy VPNs that make traditional NAC slow to deploy, extending risk-based access control to managed and unmanaged devices, SaaS, private applications, and non-human identities.
The Portnox Cloud platform delivers Network Access Control (NAC), Secure Remote Access (ZTNA), Always-on Authentication (RADIUS), and Infrastructure Administration (TACACS+) giving security and IT teams real-time visibility into every connection and the ability to instantly restrict, quarantine, or revoke non-compliant access. Portnox manages more than one million devices worldwide, secures 40 million authentication sessions daily, blocks over one million unauthorized access attempts daily, and was named Best-in-Class NAC Solution at RSA 2025.
Key capabilities:
Zero Trust Network Access (ZTNA) – Every session is verified and re-evaluated, replacing the implicit trust legacy VPNs grant by default.
Coverage for every identity, including AI agents – Governs employees, service accounts, IoT/OT devices, and AI agents under one policy framework.
AI-driven risk intelligence – An AI-powered policy engine scores, prioritizes, and enforces risk in real time.
Passwordless authentication & cloud RADIUS – Certificate-based authentication with centralized 802.1X - no on-premises RADIUS servers required.
Automated remediation – Restricts, quarantines, or revokes access for any non-compliant or high-risk identity (including a rogue AI agent) without manual intervention.
Audit-ready visibility – Real-time access logs and policy-based compliance controls support regulatory audit readiness.
Portnox integrates with the identity providers and network infrastructure organizations already run Azure AD/Entra ID, Okta, Meraki, Fortinet, and more so teams extend continuous, zero-trust access control without replacing their stack. One cloud-native platform, every identity secured, on the network or off it.
Average Rating: 4.4/5.0
Total Reviews: 123
How Do G2 Users Rate Portnox?
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Quality of Support: 8.8/10 (Category avg: 8.8/10)
Who Is the Company Behind Portnox?
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Seller: Portnox
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Company Website:
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Year Founded: 2007
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HQ Location: Austin, Texas
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Twitter: @portnox
829 Twitter followers
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LinkedIn® Page: www.linkedin.com
100 employees on LinkedIn®
Who Uses This Product?
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Who Uses This: Network Engineer
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Top Industries: Information Technology and Services, Financial Services
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Company Size: 40% Medium, 37% Large
What Do G2 Reviewers Say About Portnox?
AI-generated summary from verified user reviews
Pros
- Users appreciate the ease of use of Portnox, enabling effective management and control over network access effortlessly.
- Users value Portnox for its easy initial setup, allowing efficient deployment and seamless integration into existing systems.
- Users find Portnox's implementation ease exceptional, allowing quick deployment and management for large-scale environments.
- Users highlight the cloud-based efficiency of Portnox, enhancing security and simplifying management with excellent support.
- Users praise the exceptional customer support of Portnox, highlighting quick responses and comprehensive guidance for issues.
Cons
- Users experience performance issues with Portnox, finding it misrepresented and encountering frequent authentication problems.
- Users struggle with the poor interface design of Portnox, finding it non-intuitive and frustrating to navigate.
- Users often face connection issues with WiFi guest portal and RADIUS authentication, complicating device management and access.
- Users struggle with the not intuitive interface, taking time to familiarize themselves with Portnox's workflows and usability.
- Users report authentication issues with Portnox, including SAML integration challenges and persistent workstation problems requiring reinstallation.
