On Friday 3 July, 2026, KeySIM announced the successful deployment of a secure remote access solution for a WS4 Web Server used by Tacsec Global. The solution, implemented using a Teltonika RUT200 industrial router fitted with a KeySIM multi-network IoT SIM, enables engineers to remotely monitor and manage systems while significantly reducing the need for on-site visits.
Through its VPN platform, KeySIM provides the router with its own private fixed IP address, allowing authorised users to securely access the WS4 Web Server from virtually anywhere. By configuring a simple port forwarding rule within the network settings of Teltonika RMS (Remote Management System), engineers can easily and securely access the WS4 Web Server directly through the router’s private fixed IP address.
Unlike conventional mobile SIM cards, which are typically behind carrier-grade NAT and do not provide a routable IP address, KeySIM’s VPN platform enables direct routing to the router’s private fixed IP address. This feature makes reliable remote access possible for industrial and security applications.
Additionally, the KeySIM IoT SIM provides automatic access to Vodafone, O2, EE, and Three, allowing the router to connect to the strongest available UK mobile network. This maximises the likelihood of maintaining a stable connection with sufficient bandwidth, ensuring dependable remote access even in challenging locations.
Mark Drake, from Tacsec Global, expressed his satisfaction with the solution, stating, “Providing fast, reliable support is critical for our customers. The combination of the Teltonika RUT200 and KeySIM’s private fixed IP solution has given us secure remote access to the WS4 Web Server without the need to attend site in most cases. We expect this solution to eliminate around 90% of engineering call-outs, enabling us to respond more quickly while saving both time and operational costs for ourselves and our customers.”
This deployment serves as a testament to the effectiveness of KeySIM’s multi-network IoT SIMs, private fixed IP addressing, and VPN platform when combined with Teltonika industrial routers. By reducing unnecessary site visits and maintaining secure connectivity, organisations can improve service response times and lower ongoing support costs.
