Workshop 3 · Full Day
You build it, watch it, break it, and hand it back. One nonprofit's network, real hardware, AI riding along the whole way.
Today is different from Workshops 1 and 2. There are no slides about what AI is. Instead, a small nonprofit — Marrowfield Community Trust — has handed you their network for the day. It's real hardware in this room: a gateway, a switch, a router, and two access points. This morning none of it was configured. By this afternoon you'll have designed its networks, watched it defend itself, probed it for weaknesses, and written the report you'd hand back to the client. AI is your assistant the whole way through — but the network is the point, and the network is real.
If you've been studying for CompTIA, this is the day the diagrams become equipment you can touch. Every phase is tagged with the Network+ or Security+ objective it covers — and it's the clearest look you'll get at the job one rung above help desk.
| Time | Phase | What you do |
|---|---|---|
| 9:00 | Orientation 30m | Ground rules, hands on the hardware, build your Network Lab Tutor Bot |
| 9:30 | Build It 75m | Design a VLAN scheme with AI, then rotate: UniFi console + EdgeRouter CLI |
| 10:45 | Break | 15 minutes |
| 11:00 | Watch It 75m | Turn on intrusion detection, join the network, read real alerts, analyze traffic |
| 12:15 | Lunch | 45 minutes |
| 1:00 | Break It 80m | Authorization, OSINT recon, picoCTF, a live rogue-AP demo |
| 2:20 | Break | 10 minutes |
| 2:30 | Fix It 70m | Red vs Blue capstone, AI-drafted incident report |
| 3:40 | The Handoff 45m | One-page report per team, share-out, close |
| 4:25 | Wrap |
Same rule as every workshop, and it matters most today because today you have real tools.
This is the real lab. Every device, network, and address below is what's actually in the room. Your tutor bot knows all of it.
| Name | What it is | Runs |
|---|---|---|
LC-Gateway | UniFi Cloud Gateway Fiber — router, firewall, and brain | UniFi OS |
LC-Switch | UniFi Pro XG 8 PoE — connects everything, powers the APs | UniFi |
LC-AP-Lobby | U7 Pro In-Wall access point (WiFi 7) | UniFi |
LC-AP-Back | U6 Lite access point (WiFi 6) | UniFi |
LC-EdgeRouter | EdgeRouter X — standalone, not in the UniFi console | EdgeOS |
| Network | VLAN | Subnet | Purpose |
|---|---|---|---|
| Management | untagged | 192.168.1.0/24 | The gear itself lives here |
| Staff | 10 | 10.10.10.0/24 | Employee computers |
| Guest | 20 | 10.10.20.0/24 | Visitor wifi, walled off from staff |
| Cameras | 30 | 10.10.30.0/24 | Security cameras, isolated |
| VoIP | 40 | 10.10.40.0/24 | Desk phones |
| SSID | Network |
|---|---|
NonprofitStaff | Staff (VLAN 10) |
NonprofitGuest | Guest (VLAN 20) |
LC-EdgeRouter runs EdgeOS. Everything else runs UniFi. They are different systems with different commands. Mixing them up is the single most common mistake in this lab — your tutor bot is built to catch it, if you ask the right way.
Orientation
CompTIA — Network+: network components and their roles; the difference between a router, a switch, and an access point.
1Ground rules and the lay of the land 10m
Your facilitator walks the room, names each piece of equipment, and reads the ground rules. Follow along on the tables above. When you can point at the switch and say what it does, you're ready.
2Meet the gear 5m
Get up. Look at the actual hardware. Find the gateway, the switch, and both access points. Notice which device connects to which. You'll be configuring this in forty minutes; it helps to have seen it.
3Build your Network Lab Tutor Bot 15m
This is the assistant you'll use for the rest of the day. It knows this network — the real addresses, the real device names — which is what makes it useful when you're standing at the switch trying to remember which VLAN the cameras are on.
Open the Tutor Bot template and follow it. Paste the instruction block into your bot, then run the three test prompts. Pass all three and you're set for the day. Fail any and flag a facilitator now — not at 11am.
This is all in your web browser — Claude Projects, a Custom GPT, or Poe — so it works the same on Windows, Mac, or Linux. Nothing to install, and the same is true of every AI agent you build today, including this afternoon's alert-triage flow. Keep this bot open in a tab all day.
Build It
CompTIA — Network+: VLANs, subnetting, segmentation. Security+: segmentation as a security control.
You'll design the network's segmentation scheme with AI's help, then build part of it two different ways — once in the modern UniFi console, once on a command line — so you can feel the difference.
1Why segment a network at all? 15m
A flat network is one where every device can talk to every other device. Convenient and dangerous: when the guest wifi can reach the accounting computer, one compromised visitor laptop is a company-wide problem. Segmentation — VLANs — is how you build walls inside one physical network. Marrowfield needs four segments: staff, guest, cameras, phones. Why those four? Discuss before you design.
2Design the scheme with AI 20m
Ask your tutor bot to help you design it:
Now critique what it gives you. Beginners accept AI output because it sounds correct. Don't. Run its answer against this checklist:
Write down anything the AI got wrong or vague. That list is useful all day.
3Rotation stations 40m · ~20m each
The station laptop is already signed into LC-Gateway's console — you don't need to log in, just drive it. Work through these in order; it's fine to do this as a group with one person clicking:
Block Guest to Staff and click it.Look, don't change. This is the live lab — read the settings, don't edit them. If something looks wrong, that's a great thing to raise, not to fix.
LC-EdgeRouter is a different world: no pretty console, just a command line. First, get to one — two ways, pick whichever works:
https://192.168.1.99>_ terminal icon, usually top-right. A command line opens right in the browser.On Windows (most of you): press the Windows key, type powershell, Enter. In the blue window type ssh USERNAME@192.168.1.99 (use the name the facilitator gives you). First time, it asks to confirm — type yes, Enter. Then the password (it stays invisible as you type — normal), Enter. Windows 10 and 11 have ssh built in; nothing to install.
On Mac or Linux (one or two of you): open Terminal and run the same ssh USERNAME@192.168.1.99.
Once you have a command line either way, ask your tutor bot to translate the same guest-isolation rule into EdgeOS:
EdgeOS syntax is obscure, and language models reproduce it badly — this is the most likely place all day for the bot to hand you a confident, broken answer. When it does, write down exactly what you asked and what it said. Don't run commands you don't understand. The goal isn't a working rule; it's seeing one security idea in two systems, and catching the AI when it fumbles the harder one.
The UniFi rule and the EdgeOS commands do the same thing. Why is one so much easier? What does the easy one hide from you that the hard one makes you see?
Watch It
CompTIA — Security+: IDS/IPS, log analysis, indicators of compromise. Network+: monitoring and packet analysis.
The network is built. Now you watch it defend itself — and learn to tell a real threat from ordinary noise.
1Turn on the lights and make some traffic 15m
Intrusion detection is already running on LC-Gateway: Settings → CyberSecure → Threat Management. It watches every packet crossing the network and flags anything matching a known attack signature — 26,656 of them, updated daily. Now feed it: connect your phone to NonprofitGuest and browse a few sites. Watch yourself appear in the client list — on the guest VLAN, exactly where the Phase 1 firewall rule keeps you walled off from staff.
2Read the real alerts 20m
Open the Threats view. Events are grouped into categories:
Your facilitator generates a port scan from a lab machine. Watch Attacks and Reconnaissance light up in near real-time — that's an attacker "looking around." But notice the noise too: some alerts are just ICMP (someone's device pinging something). That's not an attack; that's normal traffic matching a broad signature. Telling them apart is the job.
3Analyze the traffic yourself 20m
The gateway tells you that something happened. A packet capture shows exactly what. Here's how to open one:
staff-normal.pcap — a few minutes of ordinary staff-VLAN activityportscan.pcap — the scan that fired the alertIn the normal capture, find a DNS query — a device asking "what's the address for this website?" — in plain readable text. That legibility is the point: unencrypted traffic hides nothing. In the scan capture, notice the pattern: one machine hammering many ports on another in seconds. That shape is the attack signature.
4Build a triage flow 20m
Real teams don't read every alert by hand — they build automation that sorts them. You'll build that sorter in Zapier or Make (from Workshop 3). Don't start from a blank page — build this exact flow first, then improve it.
Step 1 — make a fake alert feed. Create a Google Sheet called Alerts with columns time, source, category. Paste these rows so you have something to sort:
| time | source | category |
|---|---|---|
| 14:15 | 10.10.10.40 | Attacks and Reconnaissance |
| 14:16 | 10.10.10.22 | ICMP echo request |
| 14:18 | 10.10.10.40 | Exploit attempt |
| 14:20 | 10.10.20.5 | ICMP echo request |
Step 2 — build the sorter. In Zapier (Make is the same idea):
Alerts sheet.Scan, Recon, or Exploit. Action: send yourself an email — "URGENT: [category] from [source] at [time]".Reviewed. No email.Step 3 — test and improve. Run it. Two rows should email you (the Recon and the Exploit); two should just get logged (the ICMPs). If that works, you've built the core of what a security operations analyst does all day. Now make it smarter — ask your tutor bot:
Packet captures can contain real information about real devices. Today's files are sanitized lab captures. Never post a packet capture, an alert screenshot, or network logs to a public AI chat, forum, or social media without removing addresses, device names, and anything identifying. "I'll just ask ChatGPT about this weird alert" is how organizations leak their own network maps. When in doubt, describe the pattern in words instead of pasting the capture.
Break It
CompTIA — Security+: reconnaissance, footprinting, OSINT, and the ethics and legality of security testing.
Now you switch sides and think like an attacker — inside strict limits. The first fifteen minutes are the most important of the day. Do not skip them.
1Authorization: the line you do not cross 15m
Everything in this phase is legal because of where you do it and whose permission you have. Remove either and the same keystrokes become a federal crime.
What makes security testing legal:
The same command, two contexts: a port scan against a network you've been hired and scoped to test is a Tuesday. The identical scan against your neighbor's wifi, or a company you're "just curious" about, is a crime under the Computer Fraud and Abuse Act — whether or not you break anything. Intent doesn't save you. Ownership and written scope do.
We do not do deauthentication or wireless jamming — knocking devices off wifi — in any form, in the lab or out. In the United States it is a separate federal offense with its own fines, independent of everything else, and it applies even to equipment you own. No tool in this workshop does it, and you should treat any tutorial that teaches it as a red flag.
2OSINT: what a network leaks about itself 25m
Before an attacker touches a network, they read everything the organization has published about itself. This is open-source intelligence — OSINT — and it's legal, because it's all public. It's also where most real attacks begin.
Your facilitator hands out the public footprint of Marrowfield Community Trust — the same nonprofit whose network you built this morning. A team page, a job posting, a conference talk, a press release, a Facebook post. All public. Nothing "hacked." Your job: figure out what an attacker learns. What technology are they running? Who's the easiest person to target? Where's the way in?
Then use your browser agent on the real technologies the packet names — not on the organization:
Hold the line: researching a product is normal professional work. Researching a specific organization you intend to attack is the part we don't do. Then turn it around — the point of the exercise: go back through the five items and ask, did Marrowfield actually need this public? Most of it was reasonable. The failure wasn't publishing; it was the operational details that rode along. Security literacy is knowing which sentence to cut.
3picoCTF + the Kali box — practice on targets built to be attacked 25m · rotation
Groups rotate between picoCTF (browser, below) and the AI-Assisted Security Assessment on the Kali box — where you scan a real vulnerable target, exploit it, crack passwords, and have AI draft the vulnerability report. Your facilitator projects the report-writing moment for the whole room.
picoCTF is the browser track. picoCTF is Carnegie Mellon's free security-training platform; every challenge is designed to be broken. It runs in your browser. Log in (you made your account before today), then click Practice in the top menu to reach picoGym. Use the search box to find each challenge by name, click it, and read the instructions — most give you a file to download or a "launch" button. Work these beginner challenges:
Use your tutor bot as a hint engine — ask it to guide, not hand you the flag:
4The rogue AP demo 15m
Watch — this is a demonstration, not hands-on. Your facilitator broadcasts a wireless network using the same name as the lab's staff SSID — a classic "evil twin." Then you watch LC-Gateway detect it and flag it as a rogue access point. An evil twin tricks devices into connecting to the attacker instead of the real network; the defense is exactly what you're watching. Note what this is not: nobody is knocked offline, no device is jammed, no traffic intercepted. Detection, not disruption.
Fix It
CompTIA — Security+: incident response, blue team vs red team, documentation.
The capstone. The room splits in two and runs a live round on the network you've spent all day with. You've earned this — every skill it needs, you built in Phases 1 through 3.
1Brief 10m
The room divides into Blue (defenders) and Red (probers). Your facilitator sets scope — which addresses are in play — before anyone starts.
Points go to detection and documentation, not successful attacks. Red doesn't win by breaking in; Blue doesn't lose by getting probed. Blue wins by noticing and writing down what happened. A quiet network where nobody caught the scan scores worse than a probed one where the defenders logged every move. In the real job, you're paid to notice — not to be un-probeable.
2Live round 40m · concurrent
🔵 Blue — defend and detect
ping is usually just noise. Calling something normal scores too; crying wolf loses points.🔴 Red — probe within scope
ping TARGET — is it alive (quiet)nmap -sn 10.10.30.0/24 — find live hosts on the target's networknmap -sT TARGET — the classic port scan (this one Blue should catch)nmap -A TARGET — the loud one: versions, OS, scripts3Incident report 20m
Both teams together draft an incident report with AI's help. Feed your logs to your tutor bot:
Then check what the AI wrote against your actual logs. Did it invent a detail? Overstate severity? Miss something you noted? Correcting the draft is the skill — a report with a fabricated fact is worse than no report.
The Handoff
CompTIA — Security+: communicating findings; the security assessment report as a professional deliverable.
You were handed a network this morning. Now you give it back — with a one-page report the client could actually act on. This is what the job produces: not clever attacks, but clear documentation a non-technical director can read.
1Build the handoff document 25m
In your teams, produce one page for Marrowfield Community Trust. Use the Handoff template as your structure: what we set up (the segmentation, in plain language), what we found (the OSINT exposure, the detectable activity), what we recommend (concrete, prioritized, jargon-free). Draft it with your tutor bot, then edit hard. The director reading this doesn't know what a VLAN is — make the recommendation land anyway.
2Share-out and close 20m
Each team reads its top recommendation to the room. Your facilitator closes the loop: what you did today, and what the rung above help desk actually looks like from here.
All day, you've collected the tutor bot's wrong answers — especially the EdgeOS syntax it fumbled. Now use them. Write a short "guardrails" note: where does this bot need a human check before you act on its output? Which questions is it reliable on, and which is it dangerous on? Real AI-safety work, grounded in examples you generated yourself.
Build an agent that helps you find the job this workshop points toward. Feed it the CompTIA objectives you've now touched in practice; have it search help-desk-to-network-technician roles, draft tailored application notes, and explain which of today's skills to put on a résumé. The career ladder is real; this is a tool for climbing it.
Everything today was free, ran in a browser or on lab gear, and touched nothing outside this room. That's not a limitation — it's how professionals practice.