Network challengestarter5 devicespar 3:00
The staff PC on the guest VLAN
A staff desk was plugged into the wrong switch port config and lost the file server. Put it back without letting the guest in.
The ticket
"Since the desks were re-patched on Monday, PC2 can't open the file server. PC1 on the same switch works fine." — facilities ticket
Your goal: Make PC2 ping the Server — while the Guest laptop stays locked out.
No sign-up · the clock starts when you press Start
The network you're handed
- SW1 — a switch, the only switch
- PC1 — a pc, a staff desk that works
- PC2 — a pc, the staff desk that lost the server
- Guest — a pc, a visitor laptop that must stay out
- Server — a server, the staff file server
It is already cabled and configured, and something in it is wrong. Nothing on this page tells you what — find it the way an engineer would, with show commands, ping and ipconfig in the industry-standard CLI.
How it's scored
- The grader checks the real network, not your commands: the simulator runs the actual pings and reads the actual tables. It passes the moment every check holds.
- One star for fixing it, one for beating the par time of 3:00, one for using 8 commands or fewer.
- A quick fix that breaks something else doesn't count — the checks also watch what must stay working (or stay blocked).
- Your copy of the network is private to your browser. Share your score and a friend gets their own fresh copy.
Skills: VLANs · Access ports · Troubleshooting
Stuck? The theory behind it
Next challenge: The VLAN that stops at the trunk