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firefrost-operations-manual/docs/tasks/frostwall-protocol/ip-hierarchy.md
Claude 2bd96ee8c7 docs: Complete Frostwall Protocol deployment documentation 
Created comprehensive documentation for Frostwall Protocol rebuild:

deployment-plan.md (500+ lines):
- Complete 7-phase implementation guide
- GRE tunnel configuration for Command Center ↔ TX1/NC1
- Iron Wall UFW firewall rules
- NAT/port forwarding setup
- Self-healing tunnel monitoring with auto-recovery
- DNS configuration
- Testing and verification procedures
- Rollback plan
- Performance considerations

ip-hierarchy.md (400+ lines):
- Three-tier IP architecture explained
- Complete service mapping table (all 11 game servers)
- GRE tunnel IP addressing
- Traffic flow diagrams
- DNS configuration reference
- Security summary
- Quick command reference

troubleshooting.md (450+ lines):
- Quick diagnostics checklist
- Common problems with step-by-step solutions:
  - Tunnel won't come up
  - Can't ping tunnel IP
  - Port forwarding not working
  - Tunnel breaks after reboot
  - Self-healing monitor issues
  - High latency/packet loss
  - UFW blocking traffic
- Emergency recovery procedures
- Common error messages decoded
- Health check commands

This documentation enables rebuilding the Frostwall Protocol from scratch
with proper IP hierarchy, DDoS protection, and self-healing capabilities.

Unblocks: Mailcow deployment, AI stack, all Tier 2+ infrastructure

Task: Frostwall Protocol (Tier 1, Critical)
FFG-STD-002 compliant
2026-02-17 15:01:35 +00:00

7.4 KiB
Raw Blame History

Frostwall Protocol - IP Hierarchy Reference

Purpose: Quick reference for the three-tier IP architecture
Last Updated: 2026-02-17
Status: Ready for implementation

The Three-Tier IP Hierarchy

Layer 1: Scrubbing Center IP (Public-Facing)

What it is: The IP address visible to the world - what players connect to

Command Center Scrubbing IP:

  • 63.143.34.217

Purpose:

  • Advertised in DNS records
  • Absorbs DDoS attacks
  • Routes to GRE tunnels
  • What players see in connection strings

Example:

  • Player connects to play.firefrostgaming.com → DNS resolves to 63.143.34.217
  • Traffic enters Command Center, gets scrubbed/filtered
  • Forwarded through GRE tunnel to appropriate backend server

Layer 2: Backend Alias IP (Hidden Server Address)

What it is: The real physical IP address of the game server nodes

TX1 Dallas Backend IPs:

  • IP Block: 38.68.14.24/29
  • Usable range: 38.68.14.25 - 38.68.14.30
  • Gateway: 38.68.14.25
  • Individual servers:
    • Reclamation: 38.68.14.27
    • Stoneblock 4: 38.68.14.26
    • Society Sunlit Valley: 38.68.14.28
    • Vanilla 1.21.11: 38.68.14.29
    • All The Mons: 38.68.14.30
    • FoundryVTT: 38.68.14.26 (port 30000)

NC1 Charlotte Backend IP:

  • Shared IP: 216.239.104.130
  • All servers use unique ports on this IP:
    • The Ember Project: :25565
    • Minecolonies Create & Conquer: :25566
    • All The Mods 10: :25569
    • EMC Subterra Tech: :25571
    • Homestead: :25572
    • Hytale: :5520

Purpose:

  • Never publicly disclosed
  • Protected by Iron Wall firewall
  • Only accessible via GRE tunnel from Command Center
  • Hidden from DDoS attackers

Layer 3: Binding Truth IP (Internal Service Binding)

What it is: The IP address services actually bind to internally

For all Minecraft servers:

  • Bind to: 0.0.0.0 or leave server-ip= blank in server.properties
  • This allows the service to listen on all interfaces
  • GRE tunnel routing handles the rest

Purpose:

  • Internal service configuration
  • Never exposed outside the server
  • Allows flexibility for routing changes

GRE Tunnel IP Addressing

Command Center (Hub) Tunnel IPs

TX1 Tunnel:

  • Interface: gre-tx1
  • Tunnel IP: 10.0.1.1/30
  • Remote endpoint: 10.0.1.2 (TX1)

NC1 Tunnel:

  • Interface: gre-nc1
  • Tunnel IP: 10.0.2.1/30
  • Remote endpoint: 10.0.2.2 (NC1)

TX1 (Spoke) Tunnel IP

  • Interface: gre-hub
  • Tunnel IP: 10.0.1.2/30
  • Remote endpoint: 10.0.1.1 (Command Center)

NC1 (Spoke) Tunnel IP

  • Interface: gre-hub
  • Tunnel IP: 10.0.2.2/30
  • Remote endpoint: 10.0.2.1 (Command Center)

Complete Service Mapping Table

Service Scrubbing IP (Public) Backend IP (Hidden) Tunnel IP Binding IP Node
TX1 Dallas Servers
Reclamation 63.143.34.217:25565 38.68.14.27:25565 10.0.1.2:25565 0.0.0.0:25565 TX1
Stoneblock 4 63.143.34.217:25566 38.68.14.26:25566 10.0.1.2:25566 0.0.0.0:25566 TX1
Society Sunlit Valley 63.143.34.217:25567 38.68.14.28:25565 10.0.1.2:25565 0.0.0.0:25565 TX1
Vanilla 1.21.11 63.143.34.217:25568 38.68.14.29:25565 10.0.1.2:25565 0.0.0.0:25565 TX1
All The Mons 63.143.34.217:25569 38.68.14.30:25565 10.0.1.2:25565 0.0.0.0:25565 TX1
FoundryVTT 63.143.34.217:30000 38.68.14.26:30000 10.0.1.2:30000 0.0.0.0:30000 TX1
NC1 Charlotte Servers
The Ember Project 63.143.34.217:25570 216.239.104.130:25565 10.0.2.2:25565 0.0.0.0:25565 NC1
Minecolonies Create & Conquer 63.143.34.217:25571 216.239.104.130:25566 10.0.2.2:25566 0.0.0.0:25566 NC1
All The Mods 10 63.143.34.217:25572 216.239.104.130:25569 10.0.2.2:25569 0.0.0.0:25569 NC1
EMC Subterra Tech 63.143.34.217:25573 216.239.104.130:25571 10.0.2.2:25571 0.0.0.0:25571 NC1
Homestead 63.143.34.217:25574 216.239.104.130:25572 10.0.2.2:25572 0.0.0.0:25572 NC1
Hytale 63.143.34.217:5520 216.239.104.130:5520 10.0.2.2:5520 0.0.0.0:5520 NC1

Note: Public port assignments above are examples - adjust based on your actual port allocation strategy.

Traffic Flow Diagram

Player connects to: play.firefrostgaming.com (Reclamation)
         |
         v
    DNS Resolution
         |
         v
    63.143.34.217:25565  ← Layer 1: Scrubbing Center IP (Public)
         |
         v
    Command Center receives connection
         |
         v
    DDoS filtering / scrubbing
         |
         v
    NAT forwarding via GRE tunnel
         |
         v
    10.0.1.2:25565  ← Tunnel IP (TX1 endpoint)
         |
         v
    38.68.14.27:25565  ← Layer 2: Backend Alias IP (Hidden)
         |
         v
    Minecraft server bound to 0.0.0.0:25565  ← Layer 3: Binding Truth
         |
         v
    Player connected to game server

DNS Configuration

All game servers point to Command Center:

# A Records
play.firefrostgaming.com              A    63.143.34.217
reclamation.firefrostgaming.com       A    63.143.34.217
stoneblock.firefrostgaming.com        A    63.143.34.217
society.firefrostgaming.com           A    63.143.34.217
vanilla.firefrostgaming.com           A    63.143.34.217
allthemons.firefrostgaming.com        A    63.143.34.217
foundry.firefrostgaming.com           A    63.143.34.217

ember.firefrostgaming.com             A    63.143.34.217
minecolonies.firefrostgaming.com      A    63.143.34.217
atm10.firefrostgaming.com             A    63.143.34.217
subterra.firefrostgaming.com          A    63.143.34.217
homestead.firefrostgaming.com         A    63.143.34.217
hytale.firefrostgaming.com            A    63.143.34.217

# SRV Records (optional, for Minecraft auto-discovery)
_minecraft._tcp.reclamation.firefrostgaming.com   SRV   0 5 25565 63.143.34.217

Management Access

Michael's Management IP: [TO BE FILLED IN]

SSH Access Rules:

  • Command Center: Allow from management IP only
  • TX1: Allow from management IP only
  • NC1: Allow from management IP only

Emergency Access:

  • If management IP changes, access servers via console in provider's control panel
  • Update UFW rules immediately
  • Test new management IP before removing old one

Security Summary

What's Protected: ✅ Real server IPs hidden from public ✅ DDoS attacks absorbed at Command Center ✅ Game traffic separated from email/web traffic ✅ Iron Wall firewall on all nodes ✅ Encrypted GRE tunnels

What's Exposed: ⚠️ Command Center IP (63.143.34.217) - intentionally public, DDoS hardened ⚠️ Management IP whitelisted for SSH

What's Locked Down: 🔒 Direct connections to TX1/NC1 game ports blocked 🔒 All traffic must route through Command Center 🔒 GRE tunnel traffic only from authorized endpoints 🔒 SSH only from management IP

Quick Commands Reference

Check tunnel status:

ip tunnel show
ip addr show gre-tx1
ip addr show gre-nc1

Test tunnel connectivity:

ping 10.0.1.2  # TX1
ping 10.0.2.2  # NC1

View NAT rules:

iptables -t nat -L -n -v

Check UFW rules:

ufw status verbose

Monitor tunnel health:

tail -f /var/log/frostwall-monitor.log

Fire + Frost + Foundation = Where Love Builds Legacy 💙🔥❄️

Document Status: REFERENCE GUIDE
Update When: IP assignments change, servers added/removed, DNS records modified

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