Making TCP/IP Secure

• Encryption
  • Substitution
  • XOR
  • Symmetric-Key Encryption
  • Asymmetric-Key Cryptography
  • Encryption and OSI
• Integrity
  • Hash
• Nonrepudiation
  • Digital Signatures
  • PKI
• Authentication
• Authorization

TCP/IP Security Standards

• User Authentication Standards
  • PPP
  • AAA
    • RADIUS
    • TACACS+
  • Kerberos
• Encryption Standards
  • SSH
  • Tunneling
• Combining Authentication and Encryption
  • SSL/TLS
  • IPsec

Secure TCP/IP Applications

• HTTPS
• SCP
• SFTP
• SNMP
• LDAP
• NTP