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Enterprise Design

Design goal

Create a Windows infrastructure that starts simple but can scale into a multi-site enterprise without redesigning the foundation.

Initial design

flowchart TD
    Internet --> FW[HQ-FW01 OPNsense]
    FW --> MGMT[VLAN 10 Management]
    FW --> SRV[VLAN 20 Servers]
    FW --> WKS[VLAN 30 Workstations]
    SRV --> DC[HQ-DC01 AD DS / DNS / DHCP]
    MGMT --> ADM[HQ-MGMT01 Admin Workstation]
    WKS --> C1[HQ-W11-001 Client]

Enterprise design principles

  • Single forest and single domain initially.
  • Sites are used for geographic expansion.
  • Separate infrastructure roles as the business grows.
  • Avoid installing every service on the domain controller long term.
  • Use documentation and automation to keep the environment reproducible.

Future enterprise components

  • Second domain controller
  • Dedicated DHCP server or DHCP failover
  • Dedicated certificate authority
  • NPS/RADIUS server
  • File server with DFS
  • Monitoring and logging
  • Microsoft 365 hybrid identity
  • Endpoint management with Intune