What wildcards can be used in the acceptFrom attribute?

The acceptFrom attribute in Splunk is used to define which hosts are allowed to send data to the Splunk instance. Wildcards can be utilized to provide flexible matching for hosts.

The correct wildcards for the acceptFrom attribute are the asterisk () and the exclamation mark (!). The asterisk () serves as a wildcard that matches zero or more characters, thereby allowing broad inclusion of hostnames. For example, using "host*" would permit any hostname that starts with "host." The exclamation mark (!) is used to signify exclusion. For instance, if you have a configuration that allows "host*" but want to exclude a specific hostname, you can combine it with the exclusion syntax to refine your acceptance criteria.

In contrast, other wildcards mentioned in the options do not apply to the acceptFrom attribute. The question is designed to test knowledge of the specific syntax and functionality within Splunk's configuration settings for data input. Understanding the correct wildcards is crucial for effectively managing data inputs and ensuring that only the desired data is ingested. Therefore, the choice of asterisk (*) and exclamation mark (!) is significant for this attribute.