--- SSL
Secure Sockets Layer (SSL) [I1] [I2] [I3] [F1] [S1] [E1] [E2] [E3] [E4] is a protocol planned by Netscape Communications Corporation, the author of the famous browser “Netscape Navigator”, to perform coded communications on Internet. If we refer to the stack TCP/IP can be seen as a intermediate level between applications and transport. It is “used” by the different protocols of the “application” level to guarantee safe data transmission.
So, the protocols of the “application” level use cryptography to provide security in internet communications and allow client/server applications to communicate so to prevent data violation, falsification and interception.
For example when the HTTP protocol uses SSL, protocol accesses are done on the door 443 (and not 80) and between “TCP” and “HTTP” protocols there is a level of cryptography.
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