• Application - Line Configuration
• Physical layer
• Services and Mechanisms
• Network Security
• Model

Symmetric Ciphers

• Substitution &Transposition Techniques
• Block Cipher
• Triple DES
• Stream Ciphers

Authentication

• Authentication Requirements
• Message Authentication Codes
• Hashes
• Kerberos
• User Authentication: Password, Certificate based & Biometric Authentication

Network Security

• Firewalls
• IP Security
• VPN
• Intrusion Detection
• Web Security
• SSL