Chapter 3
TNS Listener Security
Introduction
The Transparent Network Substrate (TNS) Listener is an integral part of almost any Oracle database. TNS refers to the network protocol used by clients to connect to Oracle databases. The TNS Listener (referred to as “Listener” going forward) is essentially a proxy, listening for network connection attempts, checking to make sure the connection attempts match with the databases the Listener is handling, and then passing the ...
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