Cryptography & Firewalls Demystified: Symmetric vs Asymmetric Keys, Packet Filtering & Proxies 🔐

[ENGLISH]
🔒 Network Security Fundamentals | Cryptography & Firewalls | Cybersecurity Basics

Build a strong foundation in network security with this comprehensive guide! Perfect for GATE, UGC NET, CCNA Security, and IT/cybersecurity professionals, this video covers cryptography and firewall concepts crucial for protecting data and networks.

✅ What You’ll Learn:

Cryptography Fundamentals: Difference between plain text and cipher text, and how encryption ensures confidentiality (the 'C' in the CIA triad)

Symmetric Key Cryptography: How DES, 3DES, and AES use a single shared key, and the challenge of secure key exchange

Asymmetric Key Cryptography: Public & private key mechanisms, the rule of using the receiver's public key for encryption, and an introduction to RSA

Firewalls: Their role as network barriers, and the difference between host-based and network-based firewalls

Types of Firewalls:

Packet Filtering Firewalls (Layers 3 & 4): Analyze IP addresses and ports

Proxy Firewalls / Application Gateways: Use Deep Packet Inspection (DPI) at Layer 5 for advanced threat detection

🎯 Perfect For:

Cybersecurity & IT students

Network security professionals

Anyone preparing for certifications, exams, or interviews in cybersecurity

📌 Why Watch This Video?

Clear, easy-to-understand explanations

Real-world examples of cryptography and firewall usage

Strengthens your exam, interview, and practical cybersecurity knowledge

#NetworkSecurity #Cryptography #Firewalls #Cybersecurity #GATE #UGCNET #CCNASecurity #DataProtection #ComputerNetworks #InformationSecurity