Device Lab

Combined device hardening readout on YOUR lab router — surface, mgmt, defaults.

Device Lab• Audio Walkthrough

00:00/02:39

Visual · device_lab

Lab: network device readout pack. YOUR lab router only. Original Cyberlium.

One lab gateway, three checklists, config backup before any toggle.

Module 4 lessons covered surface, management plane, and firmware defaults. This lab ships combined evidence from YOUR lab network device: service list, remote admin setting, defaults checklist, optional one safe change with config backup. No dorm gateway. No café admin. Next: Quiz — Network Device Hardening.

1. Lab contract: backup first

Export config backup from YOUR lab router. Complete three readout sections in one note file.

Optional: disable Telnet or change SNMP community on lab only — with backup file saved.

Command guide

Try these commands — Lab contract: backup first

═══ TOOLS & WEBSITES ═══ Browse / read these (authorized learning only — stay in YOUR lab / program scope)

Router hardening — https://www.cisa.gov/news-events/news/harden-your-network-home-and-small-business-networks CIS Controls — https://www.cisecurity.org/controls

═══ INSTALL ═══

Linux (Debian/Ubuntu):

Command — copy this

sudo apt install nmap
sudo apt install curl

macOS:

Command — copy this

brew install nmap

Windows:

Command — copy this

choco install nmap  # or download https://nmap.org/download.html

Built-in (PowerShell: Invoke-WebRequest)

═══ LINUX / macOS ═══

Command — copy this

nmap -Pn -p 1-1024 192.168.1.1 2>/dev/null | head -20 || echo 'Device surface scan — YOUR lab router only'
curl -sS -m 2 http://192.168.1.1/ -o /dev/null -w "router HTTP %{http_code}
" 2>/dev/null || true

Primary tools to practice this lesson: nmap, curl. Reference sites: Router hardening (https://www.cisa.gov/news-events/news/harden-your-network-home-and-small-business-networks); CIS Controls (https://www.cisecurity.org/controls). Run every command in the box — install first, then the usage lines — only on YOUR lab / program scope.

2. Forbidden

WAN scans of neighborhood gateways, default password spray, firmware flash on ISP CPE, mgmt changes on employer edge without ticket.

3. Close

chmod 600. Quiz next — then Logging Fundamentals.

4. What you ship: network device hardening pack

Surface, mgmt, defaults readouts. Config backup path. Optional one lab change. chmod 600.

5. What you record before the next lesson

Date. Device lab pack on YOUR router. File t16-m04-l04-device-lab.txt chmod 600.

6. Wrong vs right: stranger hosts vs YOUR lab hosts

Worked failure — same MSF word, opposite target. Right never needs a café Wi-Fi or classmate laptop.

Wrong: Include dorm gateway scan results. Skip config backup before change.
Right: Device pack on YOUR lab router. Next: Quiz — Network Device Hardening.

Hands-on Exercise

Mission: device hardening evidence pack

1) Export config backup from lab device. 2) Complete surface, mgmt, defaults sections. 3) Optional one safe change with backup. 4) chmod 600. Never target stranger gateways.

Pro Tip

Stuck? Ask Cyberlium AI Mentor

If you only have a sim, document the sim — still no stranger gateway scans.

Practice QuizQuestion 1

Multiple choice

APPLY: Device Lab requires:

Practice QuizQuestion 2

True or False

APPLY: True or False: Config backup before mgmt change is defender habit.

Practice QuizQuestion 3

Multiple choice

APPLY: ISP rental CPE you do not fully own: