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homelab-codex-ws/docs/networking.md

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Networking

Description

This page documents the current known network position and port forwarding for the homelab.

Current configuration

  • The homelab is behind NAT.
  • Port forwarding is configured as follows:
    • External ports 80-81 forward to internal ports 4480-4481
    • External port 443 forwards to internal port 4443

Known facts

  • NAT is present between the public internet and the homelab.
  • Public HTTP/HTTPS traffic reaches the homelab through forwarded ports.
  • External ports 80, 81, and 443 are known to be forwarded.
  • Internal ports 4480, 4481, and 4443 are known forwarding targets.

Unknown / needs clarification

  • Router or firewall model.
  • Whether the WAN IP is static, dynamic, or CGNAT.
  • Internal IP address of the Raspberry Pi 5.
  • Whether the Raspberry Pi 5 uses DHCP or static addressing.
  • Exact mapping for external ports 80-81 to internal ports 4480-4481:
    • Whether 80 maps to 4480.
    • Whether 81 maps to 4481.
  • Protocols forwarded for each port: TCP, UDP, or both.
  • Whether any other ports are forwarded.
  • LAN subnet and gateway.
  • DNS provider and DNS records.
  • IPv6 availability or absence.
  • Firewall rules on the Raspberry Pi 5.