The AT-TLS connection action represents attributes at the connection level. This action is optional, and is needed only when a subset of connections within an AT-TLS environment must have different parameters. Handshake role, security version, cipher suites, and tracing are examples of attributes that can be changed at the connection level. In a simple implementation of AT-TLS, you do not need to specify this action.
System SSL connections are initialized within a System SSL environment. Use the AT-TLS connection action to override attributes specified at the SSL environment layer. System SSL connection resources are released when the connection closes.