NetFoundry Frontdoor is a zero-trust ingress platform that enables you to securely expose your internal services to the public internet without opening inbound firewall ports or modifying your network security configuration. Whether your services run on laptops, in data centers, Kubernetes clusters, or cloud environments, Frontdoor provides centrally managed, secure access through lightweight agents and encrypted tunnels. The most common use case is exposing a single application for private access with no open inbound ports.