Small office LAN template

Components in this network diagram

• ISP fibre
• ONT / modem
• 4G backup link
• Router & firewall
• Core switch
• VLAN 10: staff PCs
• VLAN 20: VoIP phones
• VLAN 30: printers
• VLAN 40: guest Wi-Fi
• NAS file server
• Cloud backup
• Access point: floor 1
• Access point: floor 2
• Laptops & phones
• Remote-access VPN

How to use this network diagram template

1. Click Open in the editor. The network diagram opens on a new page in FlowDiagram — nothing is uploaded and there is no sign-up.
2. Rename, add or delete shapes and drag them where you want; connectors stay attached as things move.
3. Drop in vendor logos from the library — 1,160 of them, including every AWS, Azure and Google Cloud service icon — or restyle it with the colour and theme controls.
4. Prefer text? Edit the Mermaid source below and paste it in through ☰ → Import diagram (see the Mermaid editor); it imports as an editable diagram.
5. Export to PNG, SVG or PDF, or press Ctrl+L for a link that carries the whole diagram.

Mermaid source

The whole template is the text below. Paste it into FlowDiagram, keep it in Git next to the code it describes, or hand it to an AI assistant to extend.

flowchart TB
  ISP((ISP fibre)) --> MODEM[ONT / modem]
  BACKUP((4G backup link)) --> FW[Router & firewall]
  MODEM --> FW
  FW --> CORE[Core switch]
  CORE --> VL10[VLAN 10: staff PCs]
  CORE --> VL20[VLAN 20: VoIP phones]
  CORE --> VL30[VLAN 30: printers]
  CORE --> VL40[VLAN 40: guest Wi-Fi]
  CORE --> NAS[(NAS file server)]
  NAS --> CLOUD[Cloud backup]
  CORE --> AP1[Access point: floor 1]
  CORE --> AP2[Access point: floor 2]
  AP1 --> LAP[Laptops & phones]
  AP2 --> LAP
  FW --> VPN[Remote-access VPN]

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