Network Security

Network Security protects systems from intrusions, misuse, and attacks by combining firewalls, intrusion detection systems, and segmentation strategies.

Key Measures

• Firewalls: Control incoming and outgoing traffic.
• IDS/IPS: Detect and prevent suspicious activity.
• Segmentation: Isolate critical systems to limit lateral movement.
• VPNs: Secure remote access connections.

Example Scenario

A financial company sets up a secure branch office:

1. A firewall blocks unauthorized traffic.
2. IDS detects brute-force attempts on employee accounts.
3. Critical databases are isolated in a segmented VLAN.
4. Remote employees connect securely via VPN.

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