Secure Remote Access for Critical Infrastructures and Cyber Physical Systems
Operational Technology (OT), SCADA, Industrial Control Systems (ICS) and IT Remote User Access
Delivering Unmatched "Protocol Isolated"
Secure Remote Access
Simplify secure remote access for operational technology while shielding your infrastructure from modern cyber threats. Xona combines zero trust architecture with unmatched usability—making access more secure and less complex.
Protocol Isolation enables secure remote access by creating a protective barrier around SSH, VNC, RDP, and Web protocols. This prevents external threat actors from infiltrating your trusted network, specific assets, or critical data.
Xona enhances secure remote access with superior data protection—using encrypted static PNG images instead of active data transit. This prevents hackers from intercepting data or injecting malware during sessions.
Eliminate the 30 year old “Insecure” VPN technology from your network. VPN’s are one of the weakest and most vulnerable entry points of your network and never designed to be a security solution.
Xona is purpose-built for the entire enterprise, delivering operational technology security and secure access for IT, OT, SCADA, ICS, as well as 3rd party vendor connections. Consolidate and streamline your Secure Remote Access Architecture.
Enhance troubleshooting, end-user collaboration, and training with read-only access for real-time support in the control room. Strengthen vendor access control with supervisory approvals, site-level access lobbies, and directional file transfers to maintain safety and oversight.
Operate critical assets in real-time using any standard web browser—no plug-ins or agents required.
Authenticate easily with WebAuth, OTP tokens, mobile apps, or integrate with your existing MFA solutions.
Monitor all activity with detailed access logs and video session recordings for complete operational visibility, session monitoring, and auditing.
Support key compliance standards like NERC CIP, IEC 62443, and NIST 800-53 with explicit authorization protocols.
Protect What Powers Your Business
Operational technology is the backbone of critical infrastructure, and operational technology security is more important than ever. With our advanced zero-trust architecture and technology-agnostic solutions, you can ensure seamless, secure access to your systems from anywhere. Don’t leave your OT systems vulnerable—schedule a consultation with our experts today.
Fast, Effortless Deployment Options for Every Environment
Critical infrastructure demands versatile, secure, and compliant deployment solutions.
Our flexible deployment options are designed for ease, installing in less than 30 minutes and enabling rapid provisioning.
No matter your setup, we deliver secure remote access solutions that provide seamless operational access, are simple to manage, and built for reliability:
- Critical Security Gateway CSG appliance - 1U & DIN Rail: Compact, industrial-grade hardware with compliance to IEC61850 and IEEE 1613 standards.
- Virtual Machine Appliance: Can also be deployed as a virtual appliance on all major hypervisors for streamlined integration.
Streamlined and Secure Remote Vendor Access Management
Our remote vendor access solution combines a zero-trust architecture with intuitive tools to ensure vendors and external partners can access only what they need—when they need it—without compromising your infrastructure.
- Seamless Authentication: Effortlessly bridge access gaps with browser-based clientless authentication and integrated hardware token MFA for secure, frictionless connectivity.
- Isolated OT Access: Limit vendors to their assigned assets with robust OT asset and protocol isolation.
- Granular Access Control: Role-based access control (RBAC) enables precise permissions for vendor actions like operating HMIs or patching assets.
- Monitored File Transfers: Safeguard critical data with moderated file transfers, requiring organizational approval and detailed access logs.
- Managed Asset Access: Utilize virtual "wait lobbies" to moderate vendor access, ensuring plant-level oversight before asset connections.
- Comprehensive Session Logs: Record and log all vendor sessions for auditing, forensic analysis, or training purposes, ensuring transparency and compliance.
"Security for Energy Operations"
Our operational technology systems were vulnerable to frequent access issues and potential threats. With the secure solutions provided by Solution Synergy, we’ve achieved seamless remote access while ensuring zero trust compliance. The peace of mind we now have is invaluable.
"Zero Trust, Maximum Confidence"
Implementing Solution Synergy's OT security platform was a game-changer for us. The protocol isolation and integrated MFA gave us the confidence to manage critical infrastructure securely, even from remote locations. Their team's expertise and support have been outstanding.
"Critical Infrastructure Protection"
As a company responsible for critical infrastructure, we needed a partner who truly understood OT challenges. Solution Synergy delivered with a robust, frictionless solution that ensures both security and usability. We can now focus on operations without worrying about cyber risks.
Frequently Asked Questions About Xona Secure Access
Get Answers That Make Sense for You And Your Employees
Get quick, clear answers to the most common questions about deploying and using Xona for secure access. Learn how Xona simplifies remote connectivity, strengthens cybersecurity, and reduces operational complexity across critical environments.
With Xona, you can deploy secure access in under 60 minutes, eliminate VPNs and jump servers, and leverage Protocol Isolation to prevent direct endpoint connections—all while reducing costs and improving security for IT, OT, and critical infrastructure.
How quickly and easily can Xona be deployed for secure access use?
How does Xona differ from VPAM/3rd-party remote access tools (often VPN-based)?
What type of equipment, and prep work is required to deploy Xona?
The only requirements are a Xona Critical Service Gateway (CSG) appliance, a browser running HTTPS, the assignment of two IP addresses, and one firewall rule. Simply connect the CSG two Ethernet ports to the unprotected and protected networks, assign IP addresses, and configure user authentication and access.
- One Xona CSG (hardware or virtual) with two interfaces (untrusted/DMZ side and trusted/protected side).
- IP addresses for each interface.
- A single inbound firewall rule (TLS/HTTPS 443) from users to the CSG.
- Optional IdP integration (AD/LDAP/SAML) for MFA/SSO.
- There are no client agents required on endpoints or on OT assets. The CSG converts RDP/SSH/VNC into an encrypted, interactive video image stream to the browser.
Will Xona increase our network complexity?
NO, Xona reduces network complexity. The CSG sits at the trust boundary and isolates protocols, so critical assets are never exposed to user endpoints. You typically add one HTTPS rule to the CSG—no re-segmentation, no new tunnels, no jump servers, and no VPN clients.
How difficult is it for end-users to switch from a VPN to Xona secure access?
It’s typically easier. Users’ login via a modern browser (Chrome/Edge/Firefox) with MFA and reach authorized assets in ~3 clicks, without any VPN client or plugins. Customers report real-time responsiveness even on constrained links (e.g., satellite, rural sites).
Can Xona streamline our existing infrastructure, reduce costs and improve security at the same time?
Yes. Customers commonly eliminate VPNs and jump servers entirely saving money and centralizing secure access administration with Xona.
You get one platform that applies to the entire enterprise for remote, local, 3 rd party PAM, as well as OT secure access (ICS, SCADA, PCS), all with protocol isolation, MFA, session recording/monitoring, moderated file transfer, and centralized policy management – designed for OT and other critical assets.
The benefits are fewer moving parts, less operational overhead, stronger security.
What is Protocol Isolation and why should it matter to my organization?
Unlike other solutions, Xona provides Protocol Isolation, which uniquely prevents direct access to any live data streams or critical assets.
More specifically, Protocol Isolation breaks the kill chain by preventing any direct network connection from user devices to critical assets.
The CSG terminates RDP/SSH/VNC protocols on the trusted side and delivers encrypted static pixels (interactive video) to the browser over HTTPS 443—so endpoints can’t inject malware or laterally move. This is purpose-built for OT and audited for IEC 62443/NERC CIP controls.
We’re a very large Citrix/NetScaler shop so is Xona still a good fit for a Citrix environment, and how will it enhance our security?
Absolutely. Many organizations keep Citrix for IT/VDI use cases and add Xona to segregate and protect OT/ICS access.
Xona integrates with your existing identity providers (AD/LDAP/SAML) and complements ZTNA strategies. Deploy it side-by side to isolate RDP/SSH/VNC to critical assets (no endpoint connectivity; browser only) or use it to replace VPN-based access entirely—without touching your Citrix stack.
What if a laptop becomes infected with malware, how will Xona protect our critical systems from being infected and remain safe?
The user’s device never touches the critical assets network or protocols, so the malware can’t infect anything beyond the initial laptop. The CSG renders sessions as encrypted PNG graphics to the browser. With no network path from the endpoint to assets, malware on a user device can’t spread or be injected into your environment. Sessions are also recorded and monitored.