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8.4 Internet TCP/IP security

The TCP/IP protocol stack implements a truncated 4 layer model as shown in table B.1 ([ZAB97] & [ATK95]).


 
Table B.1: TCP/IP security
Layer Core Protocol Security Mechanism
Presentation / HTTP, SMTP, Telnet, Application specific
Application FTP, POP3/IMAP (e.g. SET)
Transport / Session TCP SSL (a.k.a. TLS)
Network IP IPSEC
Physical/link Various (e.g. ethernet) link-specific



 
(c) 1998, Filip Schepers