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Lesson 1: Introduction to Network Security
Page 2 of 2Key Security Protocols
Security protocols are formal rules that govern how data is protected during communication. Understanding these protocols is essential for any cybersecurity professional.
| Protocol | Layer | Purpose | Port |
|---|---|---|---|
| HTTPS | Application | Secure web browsing | 443 |
| SSH | Application | Secure remote access | 22 |
| TLS/SSL | Transport | Encryption of data in transit | — |
| IPsec | Network | Securing IP communications | — |
| WPA3 | Data Link | Secure Wi-Fi encryption | — |
Best Practices for Network Security
- Access Control
- Implement the principle of least privilege
- Use multi-factor authentication (MFA)
- Regularly audit user permissions
- Monitoring & Detection
- Deploy SIEM (Security Information and Event Management) systems
- Configure real-time alerts for suspicious activity
- Conduct regular vulnerability scans
- Incident Response Planning
- Define roles and responsibilities
- Establish communication protocols
- Test the plan with regular drills