Network Engineering Simulator v3.0

Design & Simulate Network Topologies

Build professional network diagrams with drag-and-drop simplicity. Configure devices, simulate packet flow, and master networking concepts — all in your browser.

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Connixis Network Simulator
Devices
Router
Switch
Server
Firewall
Desktop
Laptop
Router-1
10.0.0.1
Switch-1
192.168.1.2
Server-1
10.0.1.10
PC-1
192.168.1.100
Laptop-1
192.168.1.101
Firewall
10.0.0.254
Properties
Config
Routes
CLI
6
Devices
5
Links
3
Packets
100%
Health
Router-1 Config
Hostname Router-1
IP Address 10.0.0.1
Subnet 255.255.255.0
Status Online
Features

Powerful Tools for Network Engineers

Everything you need to design, configure, and simulate professional network infrastructures.

Drag & Drop Builder

Intuitive visual interface with 50+ device types. Simply drag devices and connect them with multiple cable types.

Cisco-like CLI

Practice with realistic command line interface. Execute show commands, configure routing, VLANs, and ACLs.

Packet Simulation

Visualize data flow with animated packets. Run ping tests, traceroutes, and see traffic in real-time.

Security Config

Configure firewalls, access control lists, NAT rules, and VLANs. Learn network security hands-on.

Routing Protocols

Configure static routes, RIP, OSPF, EIGRP, and BGP. Understand how routing protocols work.

Save & Export

Save topologies as JSON files. Export network diagrams as images. Share configurations easily.

50+ Devices

Comprehensive Device Library

Router
Switch L2
Switch L3
Firewall
Server
Desktop
Laptop
Access Point
Cloud
Internet
Data Center
VPN
Mobile
Printer
IP Camera
Router
Switch L2
Switch L3
Firewall
Server
Desktop
Laptop
Access Point
Cloud
Internet
Data Center
VPN
Mobile
Printer
IP Camera

Ready to Build Your Network?

Start designing professional network topologies in seconds. No installation required — completely free and open source.

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Portfolio GitHub