Ports and services
A server offers many services at once; the port says which one each request is for. First, match each service with its port. Then decide which ports you would open on three real servers.
Click a service and then its port (or the other way around).
Services
Ports
The explanation of each match will appear here.
Your port cheat sheet
| Port | Service | What it is for |
|---|
Every port open to the Internet is a door anyone can knock on. Choose a server, tick the ports you would open and check.
Tick the ports you would open and click “Check.”