14 KiB
14 KiB
🌐 Network Infrastructure Guide
🟡 Intermediate Guide
This guide covers the complete network infrastructure of the homelab, including the blazing-fast 25Gbps symmetric internet connection, 10 Gigabit Ethernet backbone, Tailscale overlay network, and DNS architecture.
⚡ Internet Connection
ISP Specifications
| Specification | Value |
|---|---|
| Download Speed | 25 Gbps |
| Upload Speed | 25 Gbps |
| Type | Symmetric Fiber |
| Latency | <5ms to major CDNs |
Note
: This enterprise-grade connection supports the entire infrastructure with bandwidth to spare, enabling true 10GbE LAN-to-WAN performance.
🚀 10 Gigabit Ethernet Infrastructure
TP-Link TL-SX1008 - Core 10GbE Switch
Hardware Specifications
- Model: TP-Link TL-SX1008
- Type: 8-port 10 Gigabit Ethernet unmanaged switch
- Ports: 8x 10GBASE-T RJ45 ports
- Switching Capacity: 160 Gbps
- Forwarding Rate: 119.05 Mpps
- Power: External power adapter
- Form Factor: Desktop/rack-mountable
Connected Systems
| Host | Interface Type | Use Case | Performance |
|---|---|---|---|
| Atlantis | Built-in 10GbE | Media streaming, backup operations | Full 10Gbps |
| Calypso | PCIe 10GbE card | Development, package caching | Full 10Gbps |
| Shinku-Ryuu | PCIe 10GbE card | Gaming, creative work, large transfers | Full 10Gbps |
| Guava | PCIe 10GbE card | AI/ML datasets, model training | Full 10Gbps |
🏗️ Network Topology
Physical Network Layout
Internet (25Gbps Symmetric Fiber)
│
├── TP-Link Archer BE800 Router (WiFi 7)
│ │
│ ├── Main Network (192.168.0.0/24) ──── Trusted devices
│ │ │
│ │ └── Mesh Nodes (APs) ──── WiFi coverage
│ │
│ ├── IoT WiFi ──── Smart home devices (isolated)
│ │
│ └── Guest WiFi ──── Visitors (internet only)
│
└── TP-Link TL-SX1008 (10GbE Switch)
├── Atlantis (192.168.0.80) - 10GbE
├── Calypso (192.168.0.250) - 10GbE
├── Shinku-Ryuu - 10GbE
└── Guava - 10GbE
Router Details
| Specification | Value |
|---|---|
| Model | TP-Link Archer BE800 |
| WiFi Standard | WiFi 7 (802.11be) |
| WAN Port | 10GbE |
| LAN Ports | 4x 2.5GbE + 1x 10GbE |
| Mesh Support | Yes (EasyMesh) |
Wireless Coverage
- Primary Router: TP-Link Archer BE800 (WiFi 7)
- Mesh Nodes: Additional APs for whole-home coverage
- SSIDs: Main, IoT, Guest (isolated networks)
Network Segments
Main Network (192.168.0.0/24)
- Purpose: Primary homelab infrastructure
- Speed: 1GbE standard, 10GbE for high-performance systems
- Access: Full LAN access, Tailscale routing
- Devices: Servers, NAS, workstations, trusted devices
IoT WiFi Network
- Purpose: Smart home devices, sensors
- Isolation: Internet access only, no LAN access
- Devices: Smart bulbs, sensors, cameras, etc.
- Note: VLAN segmentation planned for future
Guest Network
- Purpose: Visitor internet access
- Isolation: Complete isolation from internal networks
- Features: Bandwidth limiting, time restrictions available
🔒 Tailscale VPN Overlay
Tailscale Network Architecture
Tailscale Mesh Network (100.x.x.x/10)
├── Atlantis (100.83.230.112)
├── Calypso (100.103.48.78)
├── Setillo (100.125.0.20)
├── Homelab VM (100.67.40.126)
├── Chicago VM (100.99.156.20)
├── Bulgaria VM (100.86.60.62)
├── Concord NUC (100.72.55.21)
├── Shinku-Ryuu (TBD)
├── Anubis (100.86.130.123)
├── Guava (100.105.59.123)
├── Pi-5 (100.77.151.40)
├── Pi-5-Kevin (100.123.246.75)
└── Contabo VM (TBD)
Tailscale Benefits
- Zero-Config VPN: Automatic mesh networking
- Split-Horizon DNS: Local hostname resolution via AdGuard
- Mobile Access: Secure remote access from anywhere
- Cross-Platform: Works on all devices and operating systems
- NAT Traversal: Works behind firewalls and NAT
🌐 DNS Architecture
Split-Horizon DNS with AdGuard Home
┌─────────────────────────────────────────────────────────────────┐
│ DNS RESOLUTION FLOW │
├─────────────────────────────────────────────────────────────────┤
│ │
│ Query: plex.vish.gg │
│ │
│ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │
│ │ Device │───►│ AdGuard │───►│ Cloudflare │ │
│ │ (Client) │ │ Home │ │ DNS │ │
│ └─────────────┘ └──────┬──────┘ └─────────────┘ │
│ │ │
│ ┌──────▼──────┐ │
│ │ Local Match? │ │
│ └──────┬──────┘ │
│ │ │
│ ┌─────────────┼─────────────┐ │
│ │ YES │ │ NO │
│ ▼ │ ▼ │
│ Return Local IP │ Forward to Upstream │
│ (192.168.0.x) │ (Cloudflare) │
│ │ │
└─────────────────────────────────────────────────────────────────┘
AdGuard Home Instances
| Host | Location | Purpose | Tailscale IP |
|---|---|---|---|
| Concord NUC | Home | Primary DNS for home network | 100.72.55.21 |
| Calypso | Home | Secondary DNS, local services | 100.103.48.78 |
DNS Features
- Ad Blocking: Network-wide ad blocking for all devices
- Split-Horizon: Local services resolve to internal IPs when on Tailscale
- Query Logging: DNS query analytics and monitoring
- Parental Controls: Content filtering capabilities
- Custom Rewrites: *.vish.gg → local IPs when internal
Split-Horizon Example
| Query | From Internet | From Tailscale/LAN |
|---|---|---|
plex.vish.gg |
→ Cloudflare → Public IP | → AdGuard → 192.168.0.80 |
git.vish.gg |
→ Cloudflare → Public IP | → AdGuard → 192.168.0.250 |
grafana.vish.gg |
→ Cloudflare → Public IP | → AdGuard → Internal IP |
⚡ Network Performance
10GbE Performance Benefits
Media Streaming
- 4K Content: Smooth streaming without buffering
- 8K Content: Future-proof for ultra-high resolution
- Multiple Streams: Concurrent 4K streams to multiple devices
- Plex Performance: Instant transcoding and delivery
Backup Operations
- NAS-to-NAS: Fast synchronization between Atlantis and Calypso
- Incremental Backups: Rapid delta transfers
- Snapshot Replication: Quick BTRFS/ZFS snapshot transfers
- Disaster Recovery: Fast restoration from backups
Development Workflows
- Docker Images: Rapid container image pulls/pushes
- Package Caching: Fast APT/NPM/PyPI cache access
- Git Operations: Large repository clones and pushes
- Build Artifacts: Quick distribution of compiled binaries
AI/ML Workloads
- Dataset Transfers: Multi-GB datasets in seconds
- Model Training: Fast data loading during training
- Model Sharing: Quick distribution of trained models
- Jupyter Notebooks: Responsive remote notebook access
Creative Work
- Video Editing: 4K/8K raw footage transfers
- Photo Libraries: RAW image synchronization
- ** 3D Rendering**: Asset and render file distribution
- Audio Production: Multi-track project sharing
🔧 Network Configuration
10GbE Interface Configuration
Atlantis (Built-in 10GbE)
# Check interface status
ip addr show eth1
# Configure static IP (if needed)
sudo nmcli con mod "Wired connection 2" ipv4.addresses 10.0.0.112/24
sudo nmcli con mod "Wired connection 2" ipv4.gateway 10.0.0.1
sudo nmcli con mod "Wired connection 2" ipv4.dns 10.0.0.1
sudo nmcli con up "Wired connection 2"
PCIe 10GbE Cards (Calypso, Shinku-Ryuu, Guava)
# Install drivers (if needed)
sudo apt update
sudo apt install linux-headers-$(uname -r)
# Check PCI device
lspci | grep -i ethernet
# Configure interface
sudo nmcli con add type ethernet ifname eth1 con-name 10gbe
sudo nmcli con mod 10gbe ipv4.addresses 10.0.0.XXX/24
sudo nmcli con mod 10gbe ipv4.gateway 10.0.0.1
sudo nmcli con mod 10gbe ipv4.dns 10.0.0.1
sudo nmcli con mod 10gbe ipv4.method manual
sudo nmcli con up 10gbe
Performance Testing
Bandwidth Testing
# Install iperf3
sudo apt install iperf3
# Server mode (on target system)
iperf3 -s
# Client mode (test from another system)
iperf3 -c 10.0.0.112 -t 30 -P 4
# Expected results: ~9.4 Gbps (accounting for overhead)
Latency Testing
# Ping test
ping -c 100 10.0.0.112
# Expected results: <1ms latency on local network
Real-World Performance
# Large file transfer test
scp large_file.bin user@10.0.0.112:/tmp/
# rsync performance test
rsync -avz --progress /large/dataset/ user@10.0.0.112:/storage/
🌍 Public Access & Cloudflare
Publicly Accessible Services
All public services are accessed via *.vish.gg domain through Cloudflare:
Internet User
│
▼
┌─────────────────┐
│ Cloudflare │ ← DDoS protection, WAF, SSL
│ (Proxy) │
└────────┬────────┘
│
▼
┌─────────────────┐
│ Router :443 │ ← Only ports 80/443 forwarded
└────────┬────────┘
│
▼
┌─────────────────┐
│ Nginx Proxy │ ← SSL termination, routing
│ Manager │
└────────┬────────┘
│
▼
┌─────────────────┐
│ Internal Service│ ← Plex, Gitea, Grafana, etc.
└─────────────────┘
Cloudflare Configuration
| Setting | Value |
|---|---|
| SSL Mode | Full (Strict) |
| Always HTTPS | Enabled |
| Minimum TLS | 1.2 |
| Proxy Status | Proxied (orange cloud) |
| DDoS Protection | Always On |
Port Forwarding
| External Port | Internal Destination | Purpose |
|---|---|---|
| 80 | Nginx Proxy Manager | HTTP → HTTPS redirect |
| 443 | Nginx Proxy Manager | HTTPS services |
Security Note: All other ports are blocked. Internal services are accessed via Tailscale VPN.
Cloudflare Tunnels
Some services use Cloudflare Tunnels as an alternative to port forwarding:
- Zero-config public access
- No ports exposed on router
- Additional DDoS protection
🛡️ Network Security
Firewall Configuration
- Router Firewall: TP-Link Archer BE800 built-in firewall
- Exposed Ports: Only 80 and 443 for reverse proxy
- Default Policy: Deny all inbound except allowed
- VPN Security: Tailscale encrypted mesh networking
Access Control
- SSH Keys: Key-based authentication for all Linux systems
- Port Security: Non-standard SSH ports where applicable
- Service Binding: Services bound to specific interfaces
- Tailscale ACLs: Network access control policies
📊 Network Monitoring
Monitoring Tools
- Grafana: Network performance dashboards
- Prometheus: Metrics collection and alerting
- SNMP Monitoring: Switch and router monitoring
- Uptime Kuma: Service availability monitoring
Key Metrics
- Bandwidth Utilization: 10GbE link usage
- Latency: Inter-host communication delays
- Packet Loss: Network reliability metrics
- Connection Counts: Active network connections
🔄 Network Maintenance
Regular Tasks
- Firmware Updates: Router and switch firmware
- Cable Management: Organize and label cables
- Performance Testing: Regular bandwidth tests
- Security Audits: Network vulnerability scans
Troubleshooting
- Link Status: Check physical connections
- Speed Negotiation: Verify 10GbE link speeds
- DNS Resolution: Test hostname resolution
- Routing Tables: Verify network routing
📋 Next Steps
- Host Infrastructure: Detailed host specifications
- Tailscale Setup: VPN configuration guide
- Router Configuration: Router setup details
- Mobile Access: Mobile device configuration
This network infrastructure provides enterprise-level performance and reliability for the homelab environment, supporting everything from basic web browsing to high-performance computing workloads.