Support Tech Teacher Help keep our digital safety guides free for seniors and non technical learners. Click to hide this message

Tech Teacher is a small nonprofit. We do not run ads or sell data. Your donation helps us:

  • Offer free cybersecurity guides for seniors
  • Run workshops for underserved communities
  • Explain technology in simple, clear language
Donate with PayPal Even 3 to 5 dollars helps us reach more people.

Firewall

What is it?

A firewall is a security system that controls incoming and outgoing network traffic.


Tech Understandability: Beginner


Simple One-Sentence Definition

A firewall protects your computer from unwanted access.


Analogy or Comparison

Think of a firewall like a security guard at a building entrance.


Why it matters?

Firewalls help keep your personal information safe from hackers.


Fun Fact

The first firewall was created in the late 1980s.


Related Terms

Network Security: Network security involves strategies to protect the integrity and usability of computer networks.

Antivirus Software: Antivirus software detects and removes malware from computers.

Leave a comment