**Purpose:** Single source of truth for all network configurations (UDM Pro edge, Proxmox hosts, NPMplus, port forwarding)
**Recent:** Option B (RPC via Cloudflare Tunnel) active for 6 RPC hostnames. E2E: [05-network/E2E_CLOUDFLARE_DOMAINS_RUNBOOK.md](../05-network/E2E_CLOUDFLARE_DOMAINS_RUNBOOK.md); Option B: [05-network/OPTION_B_RPC_VIA_TUNNEL_RUNBOOK.md](../05-network/OPTION_B_RPC_VIA_TUNNEL_RUNBOOK.md).
**CCIP Relay (r630-01):** Host service at `/opt/smom-dbis-138/services/relay`; relays Chain 138 → Mainnet; uses VMID 2201 (192.168.11.221) for RPC. See [07-ccip/CCIP_RELAY_DEPLOYMENT.md](../07-ccip/CCIP_RELAY_DEPLOYMENT.md).
**Four NPMplus instances (one per public IP):** 76.53.10.36, 76.53.10.37, 76.53.10.38, 76.53.10.40. See [04-configuration/NPMPLUS_FOUR_INSTANCES_MASTER.md](../04-configuration/NPMPLUS_FOUR_INSTANCES_MASTER.md).
**NPMplus #1 (76.53.10.36, LXC VMID 10233):** 192.168.11.166 (eth0) and 192.168.11.167 (eth1). Only **192.168.11.167** is used in UDM Pro port forwarding: 76.53.10.36:80 → 192.168.11.167:80, 76.53.10.36:443 → 192.168.11.167:443. Main d-bis.org, explorer, Option B RPC (6 hostnames), MIM4U, etc.
**NPMplus #3 (76.53.10.38, LXC VMID 10235):** 192.168.11.169 (single NIC). Port forwarding: 76.53.10.38:80/81/443 → 192.168.11.169:80/81/443. **Nathan's core-2 RPC, All Mainnet (Alltra), and HYBX** nodes and services route here. Designated public IP: 76.53.10.42. See [04-configuration/NPMPLUS_ALLTRA_HYBX_MASTER_PLAN.md](../04-configuration/NPMPLUS_ALLTRA_HYBX_MASTER_PLAN.md).
**Dev VM (VMID 5700):** 192.168.11.59. Shared Cursor dev environment, four users, Gitea (private GitOps). See [04-configuration/DEV_VM_GITOPS_PLAN.md](../04-configuration/DEV_VM_GITOPS_PLAN.md).
**IP reference format:** Use `IP (VMID)` or `VMID (IP)` consistently. Full registry: [02-architecture/VMID_ALLOCATION_FINAL.md](../02-architecture/VMID_ALLOCATION_FINAL.md).
- **Port forwarding:** 76.53.10.36:80/443 → 192.168.11.167:80/443 (NPMplus). **Origin for public traffic** = 76.53.10.36. Verify 76.53.10.36:80 and :443 are **open from the internet** before using Fastly or direct; see [05-network/EDGE_PORT_VERIFICATION_RUNBOOK.md](../05-network/EDGE_PORT_VERIFICATION_RUNBOOK.md).
- **NPMplus Alltra/HYBX:** 76.53.10.38:80/81/443 → 192.168.11.169:80/81/443 (port forward); 76.53.10.42 designated public IP. See [04-configuration/NPMPLUS_ALLTRA_HYBX_MASTER_PLAN.md](../04-configuration/NPMPLUS_ALLTRA_HYBX_MASTER_PLAN.md).
**Primary path (web/api):** DNS (Cloudflare) → Fastly or A 76.53.10.36 → UDM Pro (76.53.10.36:80/443) → NPMplus (192.168.11.167) → internal services. **Option B (RPC):** The 6 RPC HTTP hostnames use Cloudflare Tunnel (CNAME to cfargotunnel.com); cloudflared (e.g. VMID 102) → NPMplus https://192.168.11.167:443. See [05-network/OPTION_B_RPC_VIA_TUNNEL_RUNBOOK.md](../05-network/OPTION_B_RPC_VIA_TUNNEL_RUNBOOK.md). Verify 76.53.10.36:80/443 for direct/Fastly: [05-network/EDGE_PORT_VERIFICATION_RUNBOOK.md](../05-network/EDGE_PORT_VERIFICATION_RUNBOOK.md).
```
Internet
↓
Cloudflare DNS (optional proxy) → Fastly or 76.53.10.36
↓
UDM Pro (76.53.10.36:80/443 port forward)
↓
NPMplus (VMID 10233: 192.168.11.167:443)
↓
Internal Services
```
### Internal RPC Access
```
Internal Network (192.168.11.0/24)
↓
Direct to RPC Nodes (192.168.11.211-243:8545/8546)
```
---
## Firewall Rules
### P2P Communication
- **Port:** 30303 (TCP/UDP)
- **Allowed:** Between Besu nodes
- **Status:** ✅ Enabled
### RPC Access
- **Ports:** 8545 (HTTP), 8546 (WebSocket)
- **Allowed IPs:** 0.0.0.0/0 (public access)
- **Status:** ✅ Enabled
### Metrics Scraping
- **Port:** 9545
- **Allowed:** Monitoring systems
- **Status:** ✅ Enabled
---
## DNS Configuration
### Internal DNS
- **Primary:** 8.8.8.8
- **Secondary:** 8.8.4.4
- **Internal Domains:** sankofa.nexus (internal)
### Public DNS
- **Provider:** Cloudflare (retained for all public hostnames)
- **Domains:** d-bis.org, mim4u.org, defi-oracle.io, etc.
- **Public path:** Web/api: CNAME to Fastly (Option A) or A to 76.53.10.36 (Option C). **RPC (Option B):** The 6 RPC HTTP hostnames use CNAME to <tunnel-id>.cfargotunnel.com (Proxied); tunnel connector → NPMplus https://192.168.11.167:443. See [05-network/OPTION_B_RPC_VIA_TUNNEL_RUNBOOK.md](../05-network/OPTION_B_RPC_VIA_TUNNEL_RUNBOOK.md).
