Best On-Premises OT Secure Remote Access Software of 2025

The Tosi Platform is an innovative Cyber-Physical Systems solution specifically crafted to safeguard, link, and manage Operational Technology (OT) networks as well as essential infrastructure. In contrast to conventional IT tools that have been modified for OT usage, Tosi is built from the ground up to cater to industrial settings, offering support for native industrial protocols and resilience against extreme temperature variations, all while eliminating the need for complex configurations. Its deployment process is exceptionally swift, with sites becoming operational in less than five minutes through a straightforward “plug-and-go” approach, which empowers organizations to securely and efficiently connect their distributed infrastructures without the necessity for specialized IT knowledge. The platform employs a robust zero-trust security framework that includes enterprise-level protections such as end-to-end 256-bit AES encryption, hardware-based authentication using RSA keys, the absence of open inbound ports, and compliance with ISO/IEC 27001:2022 standards. Additionally, Tosi provides an integrated management experience through a single interface known as TosiControl, which allows users to visualize network topology for better oversight and control, enhancing operational efficiency and security across the board. This comprehensive design not only streamlines management but also strengthens the overall security posture of industrial environments.

SurePassID is a sophisticated multi-factor authentication solution that can be deployed in various environments to protect both information technology and operational technology sectors, encompassing essential infrastructure, older systems, on-site operations, air-gapped setups, hybrid clouds, and fully cloud-based systems. The platform accommodates numerous authentication strategies, including passwordless and phishing-resistant methods like FIDO2/WebAuthn (utilizing FIDO2 PINs, biometrics, or push notifications), alongside one-time passwords (OTP through OATH HOTP/TOTP), mobile push notifications, SMS, voice calls, and conventional techniques. SurePassID seamlessly integrates with popular operating systems, facilitating domain and local logins, RDP/SSH remote access, and even older or embedded Windows systems typically found in OT/ICS/SCADA settings, thus allowing for offline two-factor authentication when necessary. Additionally, it offers protection for VPNs, network devices, appliances, legacy applications, and web applications through SAML 2.0 or OIDC identity provider capabilities, as well as access protocols for network devices. This flexibility makes SurePassID an essential tool for organizations aiming to enhance their security posture in diverse operational landscapes.

Armis Centrix™ unifies cybersecurity operations by delivering continuous discovery, monitoring, and protection of every asset across complex hybrid networks. Its AI-powered intelligence engine enables security teams to detect unmanaged devices, assess vulnerabilities, and mitigate risks before attackers can exploit them. Organizations can manage IT systems, industrial OT environments, medical IoMT fleets, and IoT devices from a single platform with zero blind spots. The platform supports both on-premises and SaaS deployments, making it flexible for industries like healthcare, utilities, manufacturing, and critical infrastructure. VIPR Pro enhances the platform with automated remediation workflows, helping teams prioritize issues based on real-world threat activity. Early Warning intelligence provides insight into vulnerabilities actively being weaponized, ensuring organizations can act ahead of threats. Armis Centrix™ also improves business outcomes by increasing operational efficiency, supporting compliance, and strengthening resilience. Trusted by global enterprises and recognized by Gartner and GigaOm, Armis Centrix™ is built to meet the cybersecurity demands of modern digital environments.

Identify and manage your asset risks by focusing on their existence rather than their behavior. Enhanced through OSINT data sources and proprietary cyber research, Sepio delivers current intelligence on known vulnerabilities, eliminating the need for you to pursue them actively. With detailed parameters, you can design and implement various tailored policies that manage your entire ecosystem, including IT, OT, and IoT assets, providing you with the flexibility to address your risks effectively. Automated policy enforcement facilitates quick and consistent actions, reducing the need for manual intervention and allowing for a swifter response to asset threats. Additionally, seamless integration with third-party tools broadens the scope of policy actions. You’ll gain comprehensive visibility over all assets, whether they function as peripherals or network components. This approach helps mitigate risks posed by unauthorized or spoofed assets, all while remaining user-friendly and requiring minimal upkeep and human oversight. Overall, Sepio empowers organizations to maintain a robust security posture with minimal disruption to daily operations.

MetaDefender OT Access provides a secure solution for just-in-time remote access to Operational Technology (OT) and Cyber-Physical Systems (CPS), allowing both internal staff and external partners to connect safely through mutually authenticated, outbound-only TLS tunnels, thus mitigating the risks associated with inbound traffic exposure to OT networks. The system is compatible with a variety of industrial and IT protocols, including Ethernet/IP, MODBUS, OPC UA, S7Comm, Telnet, SSH, RDP, and HTTPS, which ensures it can be integrated with both legacy and contemporary OT infrastructures. Depending on the chosen deployment configuration, this solution can be managed via the cloud through AWS-hosted services or installed on-premises using a local Management Console, making it versatile enough for environments that are either connected to the internet or entirely air-gapped. It utilizes essential components like an Admin UI, a Windows client or service-level client, and a Management Console for on-site setups, effectively facilitating connection management and the enforcement of security protocols. By adapting to various operational contexts, MetaDefender OT Access enhances the security landscape of OT networks while maintaining operational efficiency.

Streamlining privileges while enhancing access control for Windows, Mac, Unix, Linux, and network devices can be achieved without compromising on productivity. With extensive experience managing over 50 million endpoints, we have developed a deployment strategy that ensures rapid return on investment. Whether deployed on-premise or in the cloud, BeyondTrust allows for the swift and efficient removal of admin rights, all while keeping user productivity intact and minimizing the number of service desk inquiries. Unix and Linux systems, along with network devices like IoT, ICS, and SCADA, are particularly attractive targets for both external threats and internal malicious actors. By obtaining root or other elevated credentials, attackers can discreetly navigate through systems to access sensitive information. BeyondTrust Privilege Management for Unix & Linux stands out as a robust, enterprise-level solution that empowers security and IT teams to maintain compliance effectively. Furthermore, this solution not only safeguards valuable assets but also fosters a secure environment for users to operate efficiently.