# Set Up SSL Connections

You can configure Secure Socket Layer (SSL) connections between the DAH and other servers. You can configure SSL connections in a combination of different configuration sections:

- `[Server]`. Configure SSL in this section for connections for incoming ACI calls. You can configure this section in either the IDOL Server configuration file or DAH configuration file, depending on whether the system uses a unified or stand-alone setup.

- `[DistributedEngineN]`. Configure SSL in this section for connections for outgoing ACI calls in a stand-alone setup.

- `[IDOLServerN]`. Configure SSL in this section for connections for outgoing ACI calls in a unified setup in which you configure DAH and DIH together.

- `[DAHEngineN]`. Configure SSL in this section for connections for outgoing ACI calls in a unified setup in which you configure DAH and DIH separately.

The configuration section that you modify depends on how you want to manage your connections:

- To establish SSL connections on incoming calls only, use the `[Server]` section.

- To establish SSL connections on outgoing calls only in a stand-alone system, use the `[DistributedEngineN]` section.

- To establish SSL connections for both incoming and outgoing calls in a unified system, use the `[Server]` section, and either the `[IDOLServerN]` section or the `[DAHEngineN]` section.

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