codex-context/saturn/docs/networking.md

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.