Build an Internet network from laptop to web server. Place blocks, connect ports, configure IPv4 and DNS, then test requests and troubleshoot faults.
Guided Internet topology with equipment placeholders, clues and automatic reference wiring. Free network construction with compatible Ethernet, optical fiber and Wi-Fi ports; desktop rearrangement and phone-friendly block selection. Inspectable laptops, access points, switches, routers, firewalls, ONT, ISP, backbone, data-center router, web server, DNS and optional transparent load balancer. IPv4 addresses, subnets, return gateways, untagged LAN VLANs, SSIDs, NAT, forwarding, outbound policy, DNS A records and service controls. Modeled local-link, ping, DNS, traceroute and website-request tests with a step-by-step DNS, TCP, TLS and HTTP journey. Troubleshooting scenarios for access fiber, DNS records, gateway, VLAN, HTTPS policy, web service and backbone forwarding. Local project save/load, validated JSON import/export, SVG network diagram, equipment/address CSV and JSON test report.
Build the guided laptop-to-website project, create an alternative network in free build, or troubleshoot access fiber, DNS A record, client gateway, untagged LAN VLAN, HTTPS policy, web service and backbone-forwarding faults. Compare local-link, ping, DNS, logical traceroute and website-request results; verify repairs by delivering the modeled website response.
An educational logical IPv4 graph checks real project settings in the browser. DNS is a separate request and reply branch. Provider and backbone forwarding are aggregated; TLS and HTTP are explanatory stages. No live traffic, equipment configuration, BGP, IPv6, DHCP, ARP, VLAN trunks, congestion or production failover convergence is simulated. All exports are planning and learning records, not deployable configurations.
Connect a client through local Wi-Fi or Ethernet, a customer gateway, fiber ONT, ISP and Internet backbone to a data-center web server. A DNS resolver sits on a separate service branch. Free build supports different valid paths, including an all-in-one Wi-Fi router.
Choose an empty placeholder and select the equipment that performs its role. Clues explain each step. Guided links connect as neighboring slots are filled; you can then configure blocks and test the completed network.
No. Tests run in an educational logical IPv4 model inside the browser. Results depend on the blocks, ports, links and settings you build. No real packets are sent and no hardware configuration is changed.
Investigate missing access fiber, an incorrect DNS record or client gateway, mismatched LAN VLANs, blocked HTTPS, a stopped web service and disabled backbone forwarding. Repair the network and rerun the website test to verify the result.
Yes. Save on the current browser or export a portable project file. You can also download an SVG diagram, an equipment and addressing CSV, and a test report. Imported projects are checked before loading.
Yes. Tap blocks or choose them from the block list, edit settings and connect ports using the same controls. The diagram adapts to a smaller screen and has its own zoom and scroll controls.
The exports are learning and planning records, not device-ready configurations. The model simplifies provider routing, stateful policies and application handshakes; it does not emulate BGP, trunks, IPv6, congestion or complete device operating systems.