CGNAT(Carrier-Grade NAT)
When your ISP puts you behind shared public IP addresses, blocking direct inbound connections.
CGNAT makes traditional port forwarding impossible. Mesh VPNs like Tailscale or a VPS reverse tunnel are common workarounds.
Related articles
NAT(Network Address Translation)
The router technique that lets many private devices share one public IP address.
Port Forwarding
A router rule that directs incoming internet traffic on a specific port to a device on your local network.
VPN(Virtual Private Network)
An encrypted tunnel that lets you securely access your home network from anywhere as if you were local.