Port Forwarding
Why Port Forwarding Fails: Diagnose Double NAT, CGNAT, and IPv6 Before Buying Gear
09/19/2026
A topology-first troubleshooting guide for failed port forwards: public IP checks, double NAT, CGNAT, IPv6 firewall rules, UPnP, VPN, and tunnel alternatives.
How to Audit Your Exposed Services
09/15/2026
A practical exposure-audit guide for finding public ports, reverse proxies, tunnels, UPnP, IPv6 paths, vendor clouds, and forgotten services.