networking

Network Design in a Homelab: Segmentation, DNS and Service Access

Designing a homelab network with segmentation, DNS integration, and structured service access patterns for reliability and control.

Waqas Mohammad

— 1 min read

This post covers how networking is designed within my homelab, including segmentation, DNS integration, and service access patterns.

As the number of services increased, network structure became critical for reliability, security, and predictability. A flat network quickly becomes difficult to manage, so a more structured approach was required.

Network Overview

The homelab runs on a private LAN, with services hosted on virtual machines and Docker containers.

Key components include:

  • Proxmox host for virtualisation
  • OpenMediaVault for storage
  • Docker for service workloads
  • Pi-hole for DNS

Each component has a defined role within the network.

Network Structure

The network is designed around:

  • Static IP allocation for core services
  • Predictable addressing for infrastructure components
  • Separation between host, services, and clients

This reduces reliance on dynamic addressing and simplifies troubleshooting.

Service Access Flow

Access to services follows a consistent pattern:

Client Device
      ↓
Local DNS (Pi-hole)
      ↓
Reverse Proxy (Nginx Proxy Manager)
      ↓
Service (Docker / VM)

This standardises how services are accessed across the environment.

DNS Integration

DNS plays a central role in the network design.

Pi-hole provides:

  • Local DNS resolution
  • Domain mapping for services
  • Centralised control of service access

Instead of using IP addresses, services are accessed via consistent hostnames.

Internal vs External Access

The system supports both internal and external access:

  • Internal traffic resolves directly via local DNS
  • External traffic is routed through Cloudflare and the reverse proxy

This ensures services are accessible while maintaining a controlled entry point.

Segmentation Approach

While the network operates within a single LAN, logical segmentation is applied through:

  • Service separation (containers vs host vs storage)
  • Controlled exposure via reverse proxy
  • Limiting direct access to backend services

This reduces unnecessary communication between components.

Issues Encountered

Some challenges included:

  • DNS inconsistencies between host and containers
  • Services accessible externally but not internally
  • Port conflicts and routing issues
  • Understanding how Docker networking interacts with the LAN

Resolving these required aligning DNS, networking, and proxy configurations.

Key Learnings

  • Networking design becomes critical as systems grow
  • DNS and routing must be aligned
  • Predictable addressing simplifies troubleshooting
  • Segmentation improves both security and manageability

What’s Next

The next step is exploring backup strategies and data protection, including how important data is protected beyond RAID.

Read more