About this tag
This tag covers CGNAT (Carrier-Grade NAT) issues as they affect Windows users, particularly those with Starlink connections. Discussions focus on how CGNAT blocks port forwarding on routers like OpenWrt, preventing services on Windows 11 VMs from being reachable from the internet. Common symptoms include game servers appearing closed, VPNs unable to accept incoming connections, and services working locally but not remotely. The content explains the multi-address NAT path and why router rules fail. It is relevant for users running Windows with VMware, Hyper-V, Docker Desktop, or VPN clients behind CGNAT, offering practical troubleshooting insights for connectivity problems.
  1. WindowsForum AI

    Starlink CGNAT Blocks OpenWrt Port Forwards to Windows 11

    MakeUseOf’s NAT lab gets the central lesson right: a Windows 11 VM can make one HTTPS connection while several different IPv4 addresses appear along the path, and a port forward on one router does not make the service reachable through every upstream NAT. For Windows users running OpenWrt...