Best On-Premises OT Secure Remote Access Software of 2026

Compare the Top On-Premises OT Secure Remote Access Software as of April 2026

Sort By:

OT Secure Remote Access On-Premises Clear Filters

What is On-Premises OT Secure Remote Access Software?

OT secure remote access software enables authorized engineers, technicians, and third-party vendors to securely connect to Operational Technology (OT) networks — like industrial control systems (ICS), SCADA, PLCs, and other critical infrastructure — from remote locations. It replaces traditional VPNs and jump-servers with modern security practices such as Zero Trust Network Access (ZTNA), least-privilege access, multi-factor authentication (MFA), and session isolation to reduce attack surfaces. These solutions often include network segmentation, protocol isolation, access logging, and session recording to ensure compliance, auditability, and protection against credential theft or lateral movement. For legacy or vulnerable OT devices that cannot be patched easily, “network-cloaking” or “invisible network” techniques help hide devices from unauthorized scans. Overall, OT secure remote access software allows remote management, maintenance, and troubleshooting of critical infrastructure while preserving security, reliability, and compliance. Compare and read user reviews of the best On-Premises OT Secure Remote Access software currently available using the table below. This list is updated regularly.

1

Tosi

Tosi

The Tosi Platform is a purpose-built Cyber-Physical Systems platform designed specifically to secure, connect, and control Operational Technology (OT) networks and critical infrastructure. Unlike traditional IT tools adapted for OT, Tosi was engineered from the ground up for industrial environments: it supports native industrial protocols, tolerates extreme temperatures, and requires no complicated configuration. Deployment is rapid, sites can be up and running in under five minutes with a “plug-and-go” setup, allowing organizations to connect distributed infrastructure quickly and securely without specialized IT expertise. It implements a zero-trust security model with enterprise-grade protections: end-to-end 256-bit AES encryption, hardware-based authentication (with RSA keys), no open inbound ports, and ISO/IEC 27001:2022 certification. With Tosi, you get unified, centralized management through a single interface (TosiControl), enabling visual network topology views.

Starting Price: Free

View Software
2

SurePassID

SurePassID

SurePassID is an advanced, deploy-anywhere multi-factor authentication platform built to secure both IT and OT (operational technology) environments, including critical infrastructure, legacy systems, on-premise, air-gapped, hybrid cloud, or fully cloud-based operations. It supports a wide variety of authentication methods; passwordless, phishing-resistant approaches like FIDO2/WebAuthn (with FIDO2 PIN, biometric, or push), as well as one-time passwords (OTP via OATH HOTP/TOTP), mobile push, SMS, voice, and traditional methods. SurePassID integrates with common operating systems, including domain and local logins, RDP/SSH remote access, and even legacy or embedded Windows systems often found in OT/ICS/SCADA environments, enabling offline 2FA when needed. It also supports securing VPNs, network devices, appliances, legacy applications, web apps (via SAML 2.0 or OIDC identity provider functionality), and network-device access protocols.

Starting Price: $48 per year

View Software
3

Armis Centrix

Armis

Armis Centrix™ is a comprehensive cyber exposure management platform that provides continuous, real-time visibility and protection across IT, OT, IoT, and IoMT environments. Powered by the Armis AI-driven Asset Intelligence Engine, it identifies every connected device, assesses cyber risk, and monitors vulnerabilities across an organization’s entire digital attack surface. The platform automates risk scoring, streamlines compliance reporting, and supports rapid incident response through deep asset intelligence. With capabilities that span asset management, OT/IoT security, medical device protection, and early warning threat detection, Armis Centrix™ enhances operational resilience for modern enterprises. VIPR Pro adds advanced prioritization and remediation to connect findings directly to actionable fixes. Designed as a cloud-native, frictionless platform, Armis Centrix™ empowers organizations to reduce exposure, strengthen security posture, and maintain continuity at scale.

View Software
4

Sepio

Sepio

Detect, accurately identify, and manage your asset risks based on existence, not behavior. Augmented by OSINT data sources and internal cyber research, Sepio provides up-to-date intelligence on known asset vulnerabilities, so you don’t have to chase them. Granular parameters allow you to create and customize multiple differentiated policies that govern your entire ecosystem of IT, OT, and IoT assets so you have flexibility when it comes to managing your risks. Automated policy enforcement ensures immediate and uniformly applied action saving you from manual intervention so you can respond to asset risks and threats faster. Integration with third-party tools allows for expanded policy actions. Complete visibility to all of your assets, whether connected as a peripheral or a network element. Mitigate risks from uncontrolled or spoofing assets. Easy to operate, requiring low maintenance and minimal human intervention.

View Software
5

MetaDefender OT Access

OPSWAT

MetaDefender OT Access enables secure, just-in-time remote access to Operational Technology (OT) and Cyber-Physical Systems (CPS), allowing both internal employees and external vendors to connect safely over mutually authenticated, outbound-only TLS tunnels without exposing OT networks to inbound traffic risks. It supports various industrial and IT protocols (e.g., Ethernet/IP, MODBUS, OPC UA, S7Comm, Telnet, SSH, RDP, HTTPS), enabling compatibility across a wide range of legacy and modern OT infrastructure. Depending on deployment mode, the solution can be cloud-managed (with remote configuration via AWS-hosted services) or on-premises (with a local Management Console), making it suitable for both internet-connected and air-gapped environments. It leverages components such as an Admin UI, Windows client (or service-level client), and a Management Console (in on-site deployments) to manage connections and enforce security policies.

View Software
6

BeyondTrust Endpoint Privilege Management

BeyondTrust

Eliminate unnecessary privileges and elevate rights to Windows, Mac, Unix, Linux and network devices without hindering productivity. Our experience implementing across over 50 million endpoints has helped create a deployment approach with rapid time to value. Available on-premise or in the cloud, BeyondTrust enables you to eliminate admin rights quickly and efficiently, without disrupting user productivity or driving up service desk tickets. Unix and Linux systems present high-value targets for external attackers and malicious insiders. The same holds true for networked devices, such as IoT, ICS and SCADA. Gaining root or other privileged credentials makes it easy for attackers to fly under the radar and access sensitive systems and data. BeyondTrust Privilege Management for Unix & Linux is an enterprise-class, gold-standard privilege management solution that helps security and IT organizations achieve compliance.

View Software