Which attribute is used to specify which network input streams are accepted by Splunk?

The attribute used to specify which network input streams are accepted by Splunk is known as 'acceptFrom='. This parameter is an important configuration setting that allows administrators to define a list of IP addresses or CIDR ranges from which Splunk will accept incoming data. This is particularly useful for ensuring that only data from trusted sources is ingested, thereby enhancing security and managing data flow.

By utilizing this attribute, you can effectively control network input, allowing for precise management of data sources and reducing the risk of unwanted or malicious data entering your Splunk environment. This capability is essential for maintaining a secure and efficient data ingestion process and plays a crucial role in overall data governance within Splunk.

The other options do not accurately represent the correct parameter used for this purpose. Each of them either defines different functionalities or lacks the specific context required for setting accepted network inputs.