A security association (SA) is a database entry for a simplex IPSec connection, simplex meaning one way. For two way connections, two SAs are used. These SAs have information such as what options for encryption are used for this connection. The SA in the SA database (SADB) is uniquely identified by the Security Parameter Index (SPI). The SPI is

The correct answer to the following question will be "Simply a number, or even an essay pointer."

Explanation:

An opponent can't obtain a quite considerable number of bundles using the same key for authentication to retrieve the key or password using cryptographic algorithms. In certain terms, periodic changes are made to the code.

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