A company launches its first web application.
Everything runs smoothly… until traffic spikes.
But not from users.
From attackers.
Requests flood the system—some legitimate, many malicious.
Then suddenly…
The attacks stop at the gate.
Because something is standing guard.
A firewall.
What is a Firewall?
A firewall is a security system that monitors and controls incoming and outgoing network traffic based on rules.
Think of it as a digital security guard.
How Firewalls Work
- Inspect network packets
- Apply rules (allow/block)
- Prevent unauthorized access
Types of Firewalls
- Network Firewall
- Web Application Firewall (WAF)
- Next-Gen Firewall
Without a Firewall
- Open ports exposed
- Unauthorized access
- Malware infiltration
Benefits
- Blocks malicious traffic
- Protects internal network
- Monitors activity
