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Network Security: Chapter 6 - Nguyen Cao Dat, Tran Van Hoai

Network Security: Chapter 6 - Electronic Mail Security presents about Email Security, Email Security Approaches, Pretty Good Privacy (PGP), PGP Operational description, PGP Operation – Authentication, PGP Operation – Confidentiality. | 1 Chapter 6 Electronic Mail Security w ỂIỄ iw ixi@ g MSc. NGUYEN CAO DAT Dr. TRAN VAN HOAI 1 Email Security Email is one of the most widely used and regarded network services SMTP Simple Mail Transfer Protocol - 25 TCP Commands responses ASCII n Separate headers from envelope n Binary content structure MIME multipurpose internet mail extensions Email Security Mail servers mail agents use SMTP for exchange. Email clients use SMTP typically for relaying only preferring POP IMAP for receiving Currently message contents are not secure n may be inspected either in transit n or by suitably privileged users on destination system