Glossary infra Term Page
Port Forwarding
A NAT rule that forwards external port traffic to an internal service
Core Idea
Port forwarding is a NAT rule that takes traffic arriving on a public port and redirects it to an internal address and port. From the internet side it looks like one public entry, while the real service may live deeper inside the private network.
Why It Matters Here
Mathbong uses port forwarding for OPNsense WAN exposure rules, homelab publishing, and reverse-proxy front doors. It is one of the most direct tools for deciding what becomes visible from the outside.