Port-Forwarding (EN)

Technology

Specific NAT rule to forward external connections to internal devices

Port-Forwarding

Port-Forwarding is a specific NAT rule that forwards incoming connections on specific ports to an internal device. This technique makes internal services like web servers accessible from the outside. Port-Forwarding always requires a corresponding firewall rule, as NAT configuration alone is not sufficient.

Architecture

flowchart LR   A[Internet] --> B[Router/Firewall]   B --> C[Internes Gerät]   subgraph "NAT-Regel"     B --> D[Port 80/443]   end   D --> C   subgraph "Firewall-Regel"     B --> E[Erlaube eingehende Verbindungen]   end

Im Kontext

Wird typischerweise zusammen mit NAT (Network Address Translation) verwendet
Verwandt zu: Firewall-Regeln, DMZ, Reverse Proxy
Beispiel-Einsatz: Ein Webserver im internen Netzwerk soll von außen erreichbar sein

Quelle: AI Generated