Nama : Sultan Chairul

Nim : 2581484737

Explain the role of a firewall in protecting a business’s internal network.
Why is it critical for employees working remotely to use a VPN?
What is Wi-Fi encryption (like WPA2/WPA3), and why should a business never use an open, unsecured Wi-Fi network?

Answer:

1. Role of a Firewall

A firewall acts as a security barrier between a business’s internal network and the internet. Its main roles are:

Monitoring incoming and outgoing traffic

Blocking unauthorized access (e.g., hackers or malicious software)

Allowing only trusted connections based on predefined security rules

Think of it like a gatekeeper that decides what data can enter or leave the network. This helps prevent cyberattacks such as hacking attempts, malware infections, and data breaches.

2. Why Remote Employees Must Use a VPN

A VPN (Virtual Private Network) creates a secure, encrypted connection between a remote employee’s device and the company’s network.

It is critical because:

Encrypts data → prevents hackers from intercepting sensitive information

Protects on public Wi-Fi → reduces risk when using cafes, airports, etc.

Maintains privacy → hides the user’s real IP address

Ensures secure access to company systems

Without a VPN, data sent over the internet can be easily intercepted, especially on unsecured networks.

3. What is Wi-Fi Encryption (WPA2/WPA3) & Why Open Wi-Fi is Dangerous

Wi-Fi encryption (like WPA2 or WPA3) secures wireless networks by:

Encrypting data sent between devices and the router

Requiring a password to access the network