This is a text description of asoag015.gif, an image which depicts how Oracle Advanced Security operates at the session layer on top of SSL, which uses TCP/IP at the transport layer. On top of the stack is the database application layer making calls into the Oracle call interface (OCI) and two-task common. The OCI then uses Oracle Net services for communicating with the database server over the network.
Oracle Net is an abstraction layer where Oracle Advanced Security supports various encryption, authentication, and integrity adapters. Below the Oracle Net layer, the Oracle protocols layer and the network specific protocols layer are situated. This is where the SSL adapter is located, which uses TCP/IP.