🧱 1. Hardware Firewall
- This is a physical device (like a small box or router) that sits between your network and the internet.
- It filters traffic before it reaches your computers.
Example:
Your Wi-Fi router at home might have a built-in firewall.
Use for: Offices or home networks that want protection for multiple devices at once.
💻 2. Software Firewall
- This is a program installed on your computer.
- It protects only that specific device from unwanted connections.
Example:
Windows Defender Firewall in Windows.
Use for: Personal computers or laptops.
☁️ 3. Cloud Firewall (Next-Gen Firewall / NGFW)
- Works in the cloud (online) instead of physical hardware.
- It uses AI and advanced rules to detect and stop cyberattacks faster.
Example:
Firewalls from companies like Palo Alto Networks, Fortinet, or Cloudflare.
Use for: Businesses or organizations that use cloud services or remote workers.
🧠 Quick Summary:
| Type | Works On | Protects | Best For |
|---|---|---|---|
| Hardware | Network | Many devices | Offices, Homes |
| Software | Device | One computer | Personal use |
| Cloud | Internet | Whole network & apps | Businesses |