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Foundation glossary/Networking

Firewall

Companion card for the Foundation course — study the related lesson for full progress.

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Simple explanation

Gate that allows or blocks traffic.

Technical explanation

Policy on ports, IPs, apps, identities.

Real-life scenario

Home router + phone OS permissions + cloud security groups.

Security relevance

Policy enforcement point — wrong rules equal open doors or outages.

Practical example

Block inbound 3389 from internet.

Firewall decides allow/block by policy.

Mini quiz

Blocking inbound RDP from the internet is a:

Related lesson

Continue in the Foundation course: open lesson →