Network Security Basics: Strong Wi-Fi Settings

In this lesson you will

Remove default credentials
Keep network devices updated

An unsecured or poorly configured network exposes every connected device to unnecessary risk. Basic hardening goes a long way.

Change default credentials: Router admin panels shipped with default logins are a common attack target — always change them.
Disable remote management on the router unless specifically needed, to prevent access attempts from outside your network.
Keep firmware updated: Router manufacturers patch security vulnerabilities through firmware updates, just like phones and computers.
MAC filtering / device lists: Some routers let you see and restrict which specific devices can join the network, adding another layer of control.

Practical Skill: Log into a real router's admin panel and review its connected devices list, security settings, and firmware version against the checklist below.

TemplateNetwork Hardening Checklist

Worksheet

=== NETWORK SECURITY HARDENING CHECKLIST === [ ] Router admin password changed from the default[ ] Wi-Fi encryption set to WPA2/WPA3[ ] Remote management disabled (unless specifically needed)[ ] Router firmware is up to date[ ] Connected devices list reviewed — no unfamiliar devices[ ] Guest network isolated from main network devices[ ] Router's admin panel is not accessible from outside    the local network

Practice exercise

List every network device at home or work and check whether each still uses a default password or old firmware.

Key takeaways

Change every default password
Update firmware and turn off unused features
Share files with permissions, not 'everyone'

In the full program Module 4: Network Security Basics See how this topic is taught in depth, with practical activities and an assessment.

Free self-study lesson — no certificate. For the full instructor-led program, see registration options.