10 Network Security Diagram Examples for Secure Network Design

Updated on: 10 February 2026 | 6 min read
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10 Network Security Diagram Examples for Secure Network Design

Network security diagrams help teams spot vulnerabilities, plan controls, and communicate network design clearly. Used by admins, architects, and auditors, they turn complex networks into easy-to-understand visuals. This guide showcases practical network security diagram examples and templates you can use to strengthen your network.

What Is a Network Security Diagram

Network security diagrams are visual maps of a network’s security setup. They show how key security components work together, including:

  • Firewalls and gateways

  • DMZ and trust zones

  • IDS/IPS and monitoring tools

  • Network segmentation

  • Traffic and data flows

Instead of reading long documentation, teams can see how security is structured at a glance.

Network Security Diagram Examples to Visualize Firewalls, Segmentation, and Access Control

1. Basic Network Security Diagram Example

Shows a standard network layout with firewalls, DMZ, and security controls. Helps teams visualize traffic flows and identify potential vulnerabilities in a simple, easy-to-understand structure.

Network security diagram example showing firewalls, routers, and protected network segments for secure data flow
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Network Security Diagram Example

2. Zone Segmentation in an Office Network (Local Network Security)

Illustrates how an office network can be divided into separate security zones. Enables better policy enforcement, reduces risks, and clearly separates trusted and untrusted areas.

Diagram of zone segmentation in an office network showing how local network areas are divided and secured for better security management
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Zone Segmentation In A Office Network (Local Network Security)

3. Reference Architecture with Amazon VPC Configuration

Provides a blueprint for securing cloud infrastructure on AWS. Includes VPC design, subnets, gateways, and security groups for a scalable, well-protected cloud network.

Diagram of a reference architecture showing an Amazon VPC configuration with subnets, gateways, and connected resources
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Reference Architecture with Amazon VPC Configuration

4. Government Cloud Mesh Network

Visualizes a government or enterprise cloud network with a mesh architecture. Demonstrates secure interconnections between multiple cloud nodes and services while maintaining compliance and control.

Diagram of a government cloud mesh network showing interconnected cloud nodes and secure data flow between government agencies
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Government Cloud Mesh Network

5. Babylon Network

A detailed enterprise network security architecture diagram showing multiple subnets, firewalls, and monitoring points. Ideal for modeling complex organizational networks and planning security controls.

Diagram of a government cloud mesh network showing interconnected cloud nodes and secure data flow between government agencies
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Babylon Network

6. Internet Firewall Deployment

Focuses on firewall placement at network boundaries. Helps IT teams design defenses against external threats and ensures secure access to internal resources.

Diagram of an internet firewall deployment showing a firewall protecting the internal network from external traffic
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Internet Firewall Deployment

7. Public Hotspot Star Topology Network Diagram

Shows a star topology for a public Wi-Fi hotspot. Highlights centralized control, traffic routing, and security considerations for open networks.

Diagram of a public hotspot star topology network showing multiple user devices connected to a central access point
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Public Hotspot Star Topology Network Diagram

8. Office Network on Single Subnet

Illustrates a small office network using a single subnet. Useful for visualizing internal device connectivity and implementing basic security controls.

Diagram of an office network on a single subnet showing connected devices sharing the same IP network
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Office Network on Single Subnet

9. VLAN Network Diagram

Demonstrates the use of VLANs to segment a network logically. Helps administrators separate traffic types, enforce access policies, and improve overall network security.

Diagram of a VLAN network showing segmented virtual local area networks configured within a shared physical network
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VLAN Network Diagram

10. Distributed Firewall Topology Network Diagram

Provides a visual of a distributed firewall setup across multiple network segments. Designed to enhance security, control traffic flows, and isolate potential threats.

Diagram of a distributed firewall topology showing multiple firewalls deployed across different network segments for enhanced security
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Reference Architecture with Amazon VPC Configuration

More Network Diagram Templates

Why Use Creately to Draw Your Network Security Diagrams

When it comes to creating network security diagrams, the tool you choose matters. Creately’s network diagram software stands out because it combines powerful diagramming capabilities with ease of use and collaboration features, making network security planning faster and clearer for teams of all sizes.

Easy, Intuitive Diagram Creation

Creately offers a drag-and-drop interface that makes placing devices, security controls, and connections effortless. You don’t need steep training — network engineers and security teams can focus on design, not wrestling with the tool. Its extensive library of industry-standard shapes (routers, firewalls, cloud icons, VLAN symbols, and more) helps you build an accurate network security model diagram quickly.

Ready-to-Use Templates and Shape Libraries

With Creately, you gain access to a large set of pre-built network diagram templates, allowing you to start from professionally designed examples instead of a blank canvas. You can customize templates to match your environment, whether documenting a basic office setup or an advanced cloud architecture.

Collaboration Built for Teams

Network security diagrams are rarely created solo — they’re shared artifacts used by architects, admins, auditors, and stakeholders. Creately supports real-time collaboration, so multiple people can edit the same diagram simultaneously, leave comments, and provide feedback. All changes are tracked with version history, making it easy to review or revert previous iterations.

Rich Detail and Documentation Support

Beyond simple diagrams, Creately lets you attach notes, data, IP addresses, and specifications to individual components, ensuring every diagram contains meaningful context. You can export diagrams as PDF, SVG, or PNG for reporting or presentations.

Integrates Seamlessly Into Your Workflow

Creately works with tools teams already use, like Slack, Google Drive, and Confluence, making it easy to embed diagrams into reports, tickets, or knowledge bases.

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FAQs About Diagrams of Network Security

Why are network security diagrams important?

Network security diagrams help teams:

  • Clearly communicate network structure and security design

  • Identify gaps, weak points, and risky access paths

  • Plan and review security controls before issues occur

  • Support threat modeling, audits, and incident response

They are widely used in modern IT and cybersecurity planning because visuals reduce confusion in complex environments.

Who uses network security diagrams?

These diagrams are used across technical and compliance teams:

  • Network and system administrators

  • Security architects and engineers

  • Auditors and compliance teams

  • IT and security leadership

They create a shared understanding of security architecture across everyone involved.

What is a network security diagram used for?

A network security diagram visually represents a network’s security layout, including firewalls, DMZs, IDS/IPS, and segmentation. It helps teams identify vulnerabilities, plan controls, and communicate network design clearly.

What types of network security diagrams can I create with Creately?

You can create diagrams for office networks, VLAN setups, cloud VPCs, firewall deployments, DMZ layouts, and zero-trust architectures, among others.

Can I use Creately diagrams for compliance and audits?

Yes. Detailed diagrams with annotations, notes, and documentation make it easy to demonstrate security controls for PCI, HIPAA, ISO, or internal audits.

Is Creately suitable for both beginners and advanced IT teams?

Yes. Beginners benefit from ready-made templates and intuitive tools, while advanced teams can design complex, multi-layered network architectures with precision.

Can I use Creately to model cloud network security?

Definitely. Creately supports AWS, Azure, and GCP architectures, allowing you to map VPCs, subnets, security groups, and cloud-specific controls visually.

Can I update diagrams as my network evolves?

Yes. Creately lets you edit diagrams in real time, update components, and maintain version history to reflect network changes accurately.

Can I create diagrams for both physical and logical networks?

Absolutely. Creately supports physical layouts (hardware, switches, routers) and logical diagrams (VLANs, subnets, security zones).

Author
Amanda Athuraliya
Amanda Athuraliya Communications Specialist

Amanda Athuraliya is the communication specialist/content writer at Creately, online diagramming and collaboration tool. She is an avid reader, a budding writer and a passionate researcher who loves to write about all kinds of topics.

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