Zero-trust network access (ZTNA) template

Components in this network diagram

• Remote user
• ZTNA client agent
• Okta identity provider: SSO & MFA
• Device posture: CrowdStrike, disk encryption, OS patch
• Policy engine
• Access allowed for this app?
• Deny & log to SIEM
• Cloudflare Access broker
• App connector: data centre
• App connector: AWS VPC
• Internal HR app
• SQL database via SSH
• Internal admin portal
• Session logs
• Splunk SIEM
• Continuous re-evaluation

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 LR
  USER((Remote user)) --> AGENT[ZTNA client agent]
  AGENT --> IDP[Okta identity provider: SSO & MFA]
  AGENT --> POSTURE[Device posture: CrowdStrike, disk encryption, OS patch]
  IDP --> PE[Policy engine]
  POSTURE --> PE
  PE --> DECIDE{Access allowed for this app?}
  DECIDE -->|No| DENY[Deny & log to SIEM]
  DECIDE -->|Yes| BROKER[Cloudflare Access broker]
  CONN1[App connector: data centre] -->|Outbound-only tunnel| BROKER
  CONN2[App connector: AWS VPC] -->|Outbound-only tunnel| BROKER
  BROKER -.-> CONN1
  BROKER -.-> CONN2
  CONN1 --> APP1[Internal HR app]
  CONN1 --> APP2[(SQL database via SSH)]
  CONN2 --> APP3[Internal admin portal]
  BROKER --> LOGS[(Session logs)]
  LOGS --> SIEM[Splunk SIEM]
  SIEM --> REEVAL[Continuous re-evaluation]
  REEVAL --> PE

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