Live
NetworkVerse
Build networks. Watch packets move.
An interactive network workspace: drag devices onto a canvas, cable them, configure addresses, VLANs, routes and firewall rules, then send real packets and see exactly where they go or why they stop.
Topics
What you will practise.
- IP addressing & subnetting
- VLANs & switching
- Routing & gateways
- ARP
- Firewall rules
- Packet flow
- Troubleshooting
- TCP & ICMP
Available today
What you can do right now.
- 12 guided challenges with lessons, hints and scoring
- Free sandbox with PCs, laptops, servers, switches, access points, routers and firewalls
- Packet-level simulation: ARP, VLAN trunks, static routes, stateful firewall, TTL
- 2 network troubleshooting tickets in the IT Operations Simulator
Challenges
12 challenges, from learner to expert.
Each starts with a short lesson and ends with a score based on what you built. Work through them in order, or jump to the stage that fits you.
Learner
Learn the concepts: addressing, switching and your first router.
Guided: the lesson tells you what to build and the addressing plan is given.
- 1First Link: Two PCs and a SwitchCable two computers through a switch, give them addresses, and make them talk.Guided build 10 min
- 2Two Networks, One RouterJoin two separate networks with a router and learn why every PC needs a default gateway.Guided build 15 min
- 3Troubleshoot: Three Simple FaultsThree PCs, a router and a server, and nobody can reach the server. Find three small faults and fix them.Troubleshooting 15 min
Practitioner
Build real designs: VLAN trunks, static routing, departments and fault-finding.
Structured: you get a plan and have to make every device agree with it.
- 4VLANs Across Two SwitchesSplit two switches into VLANs and carry them over a trunk, so teams stay separate even in one subnet.Design and build 25 min
- 5Three Sites, Static RoutesConnect a head office and two branches with static routes and default routes, hub-and-spoke style.Design and build 30 min
- 6Enterprise Network: Two DepartmentsBuild a small enterprise network: two VLAN-separated departments, a router, a firewall and an application server, then secure it.Design and build 35 min
- 7Troubleshoot: Nobody Can Reach the ServerSales and HR both report that the application server is unreachable. Find three planted faults and fix them without weakening security.Troubleshooting 25 min
Professional
Secure and repair networks the way engineers do: firewall policy, DMZs and multi-fault outages.
Requirements only: you decide how to meet them, and the scoring is on outcomes.
- 8Firewall Policy: Least PrivilegeA firewall that allows everything is not a firewall. Write a policy that permits exactly what the business needs.Design and build 30 min
- 9Secure DMZ: Three ZonesPublish a web server to the internet without exposing the staff network behind it.Design and build 40 min
- 10Troubleshoot: Multi-Site OutageAfter a change window, both branches have lost contact. Four faults at three layers are hiding behind each other.Troubleshooting 35 min
Expert
Design from a brief and audit a live network for weaknesses without breaking the business.
Open brief: no addressing plan, no step list. You design, test and defend it.
- 11Design Brief: Secure Branch OfficeNo step list and no addressing plan. Read the brief, design a branch network, and defend it with tests.Design and build 50 min
- 12Audit & Harden a Live NetworkEverything works, and that is the problem. Find what is dangerously open and close it without breaking the business.Troubleshooting 40 min
Your progress
Track what you have achieved.
Honest scope
What is simulated, and what is not.
The engine routes real packets: ARP, VLAN access and trunk ports, static routing with longest-prefix match, a stateful firewall, TTL, ICMP and TCP.
Not simulated yet: DNS and DHCP, NAT, Dynamic routing protocols, Spanning tree, Wireless behaviour.
Roadmap
Coming next.
- DNS resolutionComing soon
- DHCPComing soon
- NATComing soon
- Dynamic routing (OSPF)Coming soon
- Wireless behaviourComing soon
- Internet / cloud nodeComing soon