Best OT Secure Remote Access Software in 2026

AppGate SDP is a leading Zero Trust Network Access solution that provides secure, granular access to operational technology (OT) networks. It replaces traditional VPNs with a dynamic, identity-centric approach, ensuring only authorized users and devices can access specific resources, reducing the attack surface and enhancing security for critical infrastructure.

Claroty Secure Remote Access (SRA) is purpose-built for industrial environments, enabling safe and monitored access for employees and third-party vendors to operational technology (OT) assets. It provides full visibility and control over remote sessions, ensuring compliance and minimizing risks associated with remote connectivity to critical infrastructure.

CyberArk Alero provides secure, passwordless privileged access for remote users and third-party vendors to critical IT and OT systems. It leverages biometric authentication and just-in-time provisioning to ensure timely and authorized access, significantly reducing the risk of credential theft and unauthorized entry into sensitive operational environments.

FortiGate firewalls with Zero Trust Network Access (ZTNA) provide secure remote access to OT networks by integrating next-generation firewall capabilities with Zero Trust principles. It enforces granular access policies, continuous authentication, and threat protection, ensuring only validated users and devices can connect to industrial control systems, safeguarding critical assets.

Palo Alto Networks GlobalProtect extends consistent security policies to all users, regardless of location, including those accessing OT networks. It provides secure VPN connectivity, ZTNA capabilities, and advanced threat prevention, ensuring that remote access to critical infrastructure is protected against cyber threats and unauthorized entry.

Tempered Networks Airwall creates a secure, cloaked network overlay for OT environments, enabling microsegmentation and trusted access for remote users. It uses Host Identity Protocol (HIP) to authenticate and authorize devices before any network connection is established, making OT assets invisible to unauthorized entities and protecting against lateral movement.

The Tofino Xenon Security Appliance provides industrial-grade cybersecurity for OT networks, including secure remote access capabilities. It acts as a ruggedized firewall, enforcing deep packet inspection and granular access rules to protect PLCs, RTUs, and other industrial devices from unauthorized remote connections and cyber threats in harsh environments.

ZeroTier creates secure, virtualized networks for distributed teams and IoT devices, suitable for some OT remote access scenarios. It offers a flexible, decentralized VPN solution that allows devices to connect directly and securely, bypassing complex firewall configurations and providing encrypted communication channels across various network environments.

Portnox provides cloud-native zero-trust access control for IT and OT environments. It offers continuous risk monitoring and policy enforcement, ensuring only compliant and authorized devices and users access critical resources. Its agentless deployment simplifies integration within complex OT networks.

Cyolo offers a zero-trust access platform designed for critical infrastructure and industrial control systems. It provides secure, identity-based access to OT networks and applications without placing agents on endpoints or altering network segments, enhancing operational resilience and security.

OTORIO RAM is a zero-trust network access (ZTNA) solution built specifically for industrial environments. It enables secure, monitored, and granular remote access to operational technology assets, minimizing risks while ensuring business continuity. The platform supports various industrial protocols and systems.

Claroty SRA provides a centralized platform for managing and securing remote access to industrial control systems (ICS) and operational technology (OT) networks. It enforces least-privilege access, monitors sessions, and maintains an audit trail, reducing the risk of unauthorized access and cyber threats.

Indegy, acquired by Tenable and now part of Tenable.ot, offers comprehensive visibility, threat detection, and secure remote access for operational technology environments. It helps maintain the integrity, availability, and confidentiality of industrial control systems by monitoring activity and enforcing access policies.

Forcepoint NGFW provides robust cybersecurity protection for operational technology networks. It offers secure remote access, deep packet inspection, and advanced threat prevention, ensuring the integrity and availability of critical infrastructure while enabling safe remote operations and maintenance.

Hivecell provides an edge-as-a-service platform that enables secure remote access to OT environments. It simplifies the deployment and management of applications at the edge, offering a highly secure and resilient solution for remote monitoring, control, and data processing in critical infrastructure.

Radiflow CIARA offers a comprehensive risk assessment and management platform that includes secure remote access capabilities for OT environments. It helps identify vulnerabilities, prioritize risks, and implement secure connections for remote maintenance and operations, ensuring compliance and operational continuity.

SecuriThings Horizon is an IoT security platform that extends its capabilities to secure remote access for OT devices. It provides continuous monitoring, threat detection, and policy enforcement, ensuring that all remote connections to operational technology are secure, compliant, and free from unauthorized access.

Dispel provides an ephemeral, moving target defense network for ultra-secure remote access to critical OT systems. It makes networks invisible to attackers by constantly changing IP addresses and encryption keys, offering unparalleled protection against sophisticated cyber threats and unauthorized intrusions.