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Network security diagram maker.

Describe security zones, gateways, firewalls, workloads and access paths to generate a network security diagram that explains segmentation and controls.

Network TopologyEnter to send

Free account, no card · Export SVG, PNG or PDF

See it work

Network security diagram examples.

Same tool, four requests. Every drawing below is a real render.

What you type
A zero-trust network with Internet through SASE and SD-WAN to an edge router and perimeter firewall, a DMZ web server, a core switch and data center server, plus an internal firewall, microsegmentation firewall and access switch for a user PC, laptop and Wi-Fi access point.
Then tryAdd an identity provider connected to the SASE cloud.Add a protected database behind the internal firewall.
Network topology: Zero-trust segmentation
Network topology · Cisco-convention topology icons · schematex-network

Rather start from a finished drawing? Browse 177 network diagram templates →

The drawing

What a network security diagram is.

A network security diagram shows the security-relevant parts of an environment: zones, firewalls, gateways, workloads and the paths traffic takes between them. It makes the boundaries and controls around an application or network segment visible.

Draw the path from an external user or service to the protected workload, then add the controls that inspect, route or limit that traffic. Focus on the components that affect security decisions rather than every endpoint on the network.

Standard
Cisco-convention topology icons
Also follows
Hierarchical / spine-leaf models · ANSI/TIA-606 · ONVIF
Engine
schematex-network
Editable
Double-click text, drag nodes
Export
SVG · PNG · PDF
Network topology: What a network security diagram is
Who uses it

Who uses network security diagrams.

Network topology: Security architectsSecurity architects

Segmentation controls and protected paths reviewed while designing a zero-trust network.

Network topology: Cloud security teamsCloud security teams

On-premises, cloud and policy-management connections documented for a shared control model.

Network topology: IT operations teamsIT operations teams

VPN and ZTNA access paths explained for remote workers and contractors.

How it works

How to make a network security diagram in three steps.

01

Describe it

One paragraph is enough to start.

“A zero-trust network with Internet through SASE and SD-WAN to an edge router and perimeter firewall, a DMZ web server, a core switch and data center server, plus an internal firewall, microsegmentation firewall and access switch for a user PC, laptop and Wi-Fi access point.”
02

See the drawing

Drawn by the right engine.

Network topology: Zero-trust segmentation
03

Say what changes

Every edit keeps a version.

Add an identity provider connected to the SASE cloud.
V2 · DRAWN FROM V1, NOTHING RETYPED
FAQ

Common questions

What belongs in a network security diagram?

Include the relevant security zones, firewalls, gateways, workloads, identity or access services, and the paths between them.

How do I show security zones?

Group components into labeled boundaries such as internet, DMZ, user network, application network and protected data network, then show the controls between them.

Can a security diagram show data flow?

Yes. Use directed, labeled connections to show where a request enters, which controls it traverses, and which application or data service receives it.

How detailed should a network security diagram be?

Include enough detail to review segmentation and controls, but omit devices that do not affect the security decision the drawing is meant to support.

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Draw your network security design.

Free account, no card. Describe the zones, controls and traffic paths.

Open the editor