Beginner level · Module 4: Network Security Basics · Lesson 1 of 3
Default Credentials and Weak Settings
Close the easiest ways into a network.
In this lesson you will
- Find and change default credentials
- Disable unnecessary features
Key concepts
default passwordsremote managementUPnPunused services
The lesson
Routers, cameras and printers often ship with default usernames and passwords that are published online. Change them all.
Turn off features you do not need: remote management from the internet, UPnP that opens ports automatically, and unused services.
MAC address filtering and hidden SSIDs give little real protection; rely on strong encryption and passwords instead.
Step by step
- List all network devices.
- Check for default passwords.
- Disable unused features.
- Record changes.
Practice activity
Audit the lab devices for default credentials and unneeded features.
Expected result: All defaults changed and unneeded features disabled.
Check your understanding
-
Why are default passwords dangerous?
Show answer
They are published and easy to find.
-
Does hiding the SSID secure a network?
Show answer
No, it gives little real protection.
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