Advantech routing technology allows users to easily establish connectivity between isolated networks, giving greater flexibility for building secure applications. The involved technologies include VPNs, which provide secure remote access for users; network address translation (NAT), which hides users’ web servers behind our router with destination NAT; network-based firewalls, which secure infrastructure; routers, which can be used to create application tiers on different isolated networks by leveraging the capabilities of each network, and multiple interfaces, for which Advantech routers provide numerous SKUs for various interface combinations including RS-232/485, digital I/O modules, Wi-Fi, dual SIM, and USB devices.