Best OT Secure Remote Access Software: User Reviews from December 2025

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Features of OT Secure Remote Access Software
Types of OT Secure Remote Access Software
OT vs IT security
Benefits of OT Secure Remote Access Software
Who Uses OT Secure Remote Access Software?
Challenges with OT Secure Remote Access Software
How to choose OT Secure Remote Access Software
OT Secure Remote Access Software Trends

Learn More About OT Secure Remote Access Software

Operational technology secure remote access lets authorized users safely connect to and manage industrial control systems (ICS) and other OT devices remotely. Remote access security software gives access and control of equipment from anywhere with an internet connection without the need for physical presence.

OT secure remote access software is a specialized solution designed to provide secure access to operational technology systems that are critical to industries such as manufacturing, energy, utilities, and transportation. It makes sure that engineers, technicians, plant managers, and other authorized personnel can do their jobs from remote locations without risking exposure to cyber threats.

OT secure remote access comes in handy when on-site access is impractical or impossible, such as emergencies, off-hours, or when dealing with geographical limitations.

Setting up remote access security enhances operational efficiency and supports business continuity by guaranteeing that critical systems can be accessed and managed anytime you have an internet connection.

Features of OT Secure Remote Access Software

It’s important to shield your infrastructure from unauthorized parties to maintain integrity and confidentiality. Some common features of OT secure remote access software are as follows.

Network segmentation divides the network into separate segments, each containing a subset of the devices and assets. It enhances security by stopping compromised segments before the breach extends to other parts of the network.
Virtual local area networks (VLANs) create logically separate networks within the same physical one. Like segmentation, VLAN support in remote access software enables safe, controlled access to specific network segments, which helps enforce security policies and reduce the attack surface. This segregation simplifies network administration for OT devices.
Network mapping shows you your network by graphically displaying network devices, paths, and connections. Network mapping is important for identifying all devices in the OT environment and how they interact, which is essential for troubleshooting.
Asset management, in the context of OT secure remote access, is the ability to track and manage information regarding network devices and systems. Solid asset management recognizes vulnerabilities, manages updates, and sustains your security posture. This centralized repository simplifies tasks like tracking asset health, configuration, and scheduling maintenance.
User provisioning and governance functionalities empower administrators to create user accounts within the software. This keeps unauthorized personnel out of the system, minimizing the risk of shady login attempts.
Role-based access control (RBAC) assigns system access to users based on their role within the organization. Users are granted access only to the devices and functions necessary for their assigned tasks.
Policy-based access controls, as the name indicates, use policies to determine whether access requests should be granted. Policies can include factors like time of day, location, or device type. These functionalities establish predefined rules that govern user access.
Endpoint security protects endpoints, such as user devices and workstations, from malware. It includes antivirus software, firewalls, and intrusion detection systems. Endpoint security also makes remote devices comply with security policies.

Types of OT Secure Remote Access Software

Each type of secure remote control software differs in terms of ease of use, flexibility, and comprehensiveness of security features. Here are some of the different types.

Virtual private networks (VPNs): VPNs extend a private network across a public network. This means users can send and receive data across shared or public networks as if their devices were directly connected to the private network. VPNs encrypt all data in transit and offer a safe conduit for remote access.
Endpoint security: This term refers to the practices used to protect endpoints on a network. It often includes antivirus, firewall policies, intrusion prevention systems. It may also involve making sure that the endpoints meet certain security standards before they can access the network.
Point-to-point protocol over Ethernet (PPPoE): This network protocol encapsulates PPP frames inside Ethernet frames. Mostly used for broadband modem connections, it provides authentication, encryption, and compression.
Internet protocol security (IPsec): is a protocol suite for securing internet protocol (IP) communications by authenticating and encrypting each IP packet of a communication session. It’s often used alongside VPNs to secure the tunnel created for remote access.
Network access control (NAC): NAC systems enforce security policy compliance on devices before they’re allowed to access the network. They grant differential access to network resources based on a user’s role, device type, device health, or time-of-day restrictions.
Zero trust approach: The zero trust model assumes that no system, network, or service operating outside or inside the perimeter should be trusted. Instead, it advocates for rigorous identity verification and strict access controls applied both externally and internally.
Secure shell remote access (SSH): This is a cryptographic network protocol for operating network services securely over an unsecured network. It’s widely used for logging in to remote machines to execute commands, but also supports tunneling, forwarding Transmission Control Protocol (TCP) ports, and X11 connections.
Single sign-on (SSO): SSO lets users log in once to gain access to multiple systems. This simplifies the user experience, but it must be managed correctly to maintain an appropriate level of security.
Desktop sharing: Remote desktop software lets users remotely view and operate a computer as if they were seated in front of it. This is used for remote technical support, collaboration, and presentation.

OT vs IT security

OT security and Information Technology (IT) are two distinct domains with unique security challenges. IT focuses on managing and processing information, primarily through digital systems and networks.

OT, on the other hand, is concerned with controlling physical devices and processes, such as those found in manufacturing plants, power grids, and oil refineries. While they may overlap in some areas, their fundamental differences require tailored security approaches.

IT encompasses a wide range of technologies, including computers, servers, databases, and software applications. IT security aims to protect sensitive data and systems from cyber threats such as hacking, malware, and data breaches.

OT systems often use specialized hardware and remote access security to monitor and control industrial processes, ensuring safety, efficiency, and reliability. OT security focuses on protecting these physical systems and OT devices from cyberattacks that could disrupt operations, cause physical damage, or lead to safety hazards.

Convergence of IT and OT

The increasing integration of IT and OT systems, driven by the Internet of Things (IoT) and Industry 4.0, has blurred the lines between the two. This convergence creates new security challenges as traditional IT security measures may not be sufficient to protect OT systems.

Best Practices for OT and IT Security

Segmentation: Isolate OT networks from IT networks to limit the potential impact of cyberattacks.
Access control: Implement strong access controls to restrict critical systems and data access.
Patch management: Keep OT systems updated with the latest security patches, considering the potential impact on operations.
Network security: Use firewalls, intrusion detection systems (IDS), and intrusion prevention systems (IPS) to protect OT networks.
User training: Educate personnel about security best practices and potential threats.

Benefits of OT Secure Remote Access Software

Secure remote access maintains operational efficiency, keeps industrial environments safe, and ensures that critical processes remain uninterrupted. Here are some other common benefits.

Enhanced security: Secure remote access solutions in OT environments are designed with strong measures such as end-to-end encryption, multi-factor authentication, and access-monitoring sessions. This helps safeguard critical infrastructure from cyber threats and unauthorized access so only authenticated users can interact with OT systems.
Improved compliance: With stringent regulatory requirements in many industries, secure remote access systems help organizations stay compliant with regulatory standards. They offer robust audit trails, real-time monitoring, and reporting features that facilitate transparent documentation. This is necessary for demonstrating compliance with regulatory frameworks during audits.
Better operational efficiency: By allowing remote access to systems, these solutions quickly resolve issues, reducing the need for on-site visits and associated costs. Technicians can troubleshoot and resolve problems anywhere.
Reduced downtime: With instantaneous remote access capabilities, problems can be addressed immediately.
Effective business continuity: In the event of an emergency, such as natural disasters, OT secure remote access allows businesses to continue remote operations. Key personnel can still access and manage OT systems, sustaining critical business functions.
Cost savings: Remote support software reduces the need for travel, saving money associated with business trips. Resources can be managed remotely.
Real-time monitoring: Continuous monitoring of OT environments means you can find and troubleshoot problems as they happen.
Regular maintenance and updates: OT systems can be maintained regularly and updated easily when remote access is available.
Asset management: Better visibility and control over assets in the OT network, which helps identify issues and manage resources more efficiently.

Who Uses OT Secure Remote Access Software?

Professionals who require remote operational technology access use OT security solutions.

OT engineers and technicians often need to configure, monitor, and maintain OT equipment such as PLCs, SCADA systems, and other control systems. Secure remote access makes it simple to perform diagnostics, make configuration changes, and keep tabs on systems from offsite locations.
Security analysts and IT teams are responsible for protecting OT environments from cyber threats. Analysts use remote access software to track network traffic, analyze security logs, investigate anomalies, and respond to incidents in real-time.
Maintenance personnel use OT systems remotely. Secure remote access allows them to identify and resolve issues – often without the need for on-site visits.
Emergency response teams utilize secure remote access to gain immediate visibility into affected systems in the event of an operational incident or cyber attack. They then have the means to execute corrective actions to soften damage and restore normal operations as quickly as possible.
Plant managers use secure remote access to oversee operations. With real-time access to systems, they can monitor performance and make adjustments from anywhere.

Challenges with OT Secure Remote Access Software

Whichever platform you choose, you’ll need to maintain a strategic approach that includes configuring your tools, continuous monitoring, and staying on top of response plans as your organization evolves. Some challenges that come with remote access security are discussed here.

Operational complexity: Introducing remote access solutions adds a layer of complexity. Administrators must balance the need for security with user-friendliness to ensure protocol isn’t hindered by cumbersome security procedures.
Risk of disruption: Remote access can disrupt your workflow if you don’t set it up correctly. For example, uncontrolled remote access could lead to unintentional system changes.
Complexity of OT environments: OT environments consist of a number of systems. Achieving uniform security practices across a varied environment is not an easy task.
Compatibility with legacy systems: Many OT environments include legacy systems that don’t support new security protocols.
User training and awareness: Effectively using remote access tools requires that users understand potential security risks and adhere to best practices. This can be a significant challenge, especially with a diverse user base that might not be aware of how to deal with cyber attacks.

How to choose OT Secure Remote Access Software

Choosing the right OT secure remote access software is crucial for the security of your operational technology procedures. Here are some factors to consider when selecting the appropriate remote access security software for your business.

Assess your needs: Clearly define what you require from the solution. Consider the size and difficulty of your OT environment, specific use cases (e.g., maintenance, monitoring, emergency response), and regulatory compliance requirements.
Identify security needs: Outline your security requirements, including encryption, multi-factor authentication, audit trails, and compliance with standards like IEC 62443 or NIST SP 800-82. Look for OT security solutions that meet your standards. Understand your current network infrastructure and determine how new software fits in.
Compile a list of potential vendors: Request information from these vendors and learn more about their work. This should cover all features, security protocols, hardware requirements, and integration capabilities.
Conduct a risk assessment: Determine which security components are non-negotiable. Consider the cost of purchasing and implementation, training, and maintenance.
Review legal and compliance aspects: Verify that the software contracts and service level agreements (SLAs) meet your legal requirements and compliance standards.
Implement training and governance: Once you've selected suitable OT security solutions, establish a solid training program for your users and set up governance frameworks to make sure everyone is using the software securely and effectively.

OT Secure Remote Access Software Trends

Endpoint security enhancements: As more devices require remote access, you’ll find greater emphasis on securing each endpoint. This means using more security software solutions such as endpoint detection and response (EDR) software and next-generation antivirus (NGAV) software, as well as patching devices and making them compliant with security policies before granting access.
Zero-trust architecture: This approach assumes that threats exist both outside and inside the network and thus tightens security controls around sensitive resources. Zero-trust strategies use the least privileged access, whereby users are given just enough access to the resources needed to perform their job functions and nothing more.
Identity-centric security: Security models have been focusing more on the identity of users as the primary security parameter. This requires strengthening access management and aligning roles with the requirements of remote users.
Edge computing and edge security: With the rise of the internet of things (IoT) and the push to process data closer to where it's generated, i.e., at the ”edge” of the network, there is a parallel need to secure these systems, including protecting the data in transit and at rest.

Researched and written by Amal Joby

Reviewed and edited by Aisha West

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