Network Resolution (DNS)

The fields and tags in the Network Resolution (DNS) data model describe DNS traffic, both server:server and client:server.

Tags used with the DNS event object

The following tags act as constraints to identify your events as being relevant to this data model. For more information, see "How to use these reference tables".

Object name	Tag name
DNS	network
	resolution
	dns

Fields for the Network Resolution event object

The following table lists the extracted and calculated fields for the event object in the model. Note that it does not include any inherited fields. For more information, see "How to use these reference tables".

Object name	Field name	Data type	Description	Expected values
DNS	additional_answer_count	number	Number of entries in the "additional" section of the DNS message.
DNS	answer	string	Resolved address for the query.
DNS	answer_count	number	Number of entries in the answer section of the DNS message.
DNS	authority_answer_count	number	Number of entries in the "authority" section of the DNS message.
DNS	dest	string	The destination of the network resolution event. May be aliased from more specific fields, such as dest_host, dest_ip, or dest_name.
DNS	dest_category	string	The category of the network resolution target, such as email_server or SOX-compliant. This field is automatically provided by Asset and Identity correlation features of applications like the Splunk App for Enterprise Security.
DNS	dest_port	number	The destination port number.
DNS	dest_priority	string	The priority of the destination, if applicable.
DNS	duration	number	The time taken by the network resolution event, in seconds.
DNS	entry	string	A container for the DNS message.
DNS	message_type	string	Type of DNS message.	Query, Response, unknown
DNS	query	string	The domain which needs to be resolved. Applies to messages of type "Query".
DNS	query_count	number	Number of entries that appear in the "Questions" section of the DNS query.
DNS	query_type	string	The DNS OpCode name as defined in https://tools.ietf.org/html/rfc2929#section-2.2.	Query, IQuery, Status, Notify, Update, unknown
DNS	reply_code	string	Return code for the response as defined in https://tools.ietf.org/html/rfc2929#section-2.3.	NoError, FormErr, ServFail, NXDomain, NotImp, Refused, YXDomain, YXRRSet, NotAuth, NotZone, BADVERS, BADSIG, BADKEY, BADTIME, BADMODE, BADNAME, BADALG, unknown
DNS	reply_code_id	number	Numerical id of the return code as defined in https://tools.ietf.org/html/rfc2929#section-2.3.	0-10, 16-21
DNS	response_time	number	The amount of time it took to receive a response in the network resolution event, if applicable.
DNS	src	string	The source of the network resolution event. May be aliased from more specific fields, such as src_host, src_ip, or src_name.
DNS	src_bunit	string	The business unit of the source. This field is automatically provided by Asset and Identity correlation features of applications like the Splunk App for Enterprise Security.
DNS	src_category	string	The category of the source, such as email_server or SOX-compliant. This field is automatically provided by Asset and Identity correlation features of applications like the Splunk App for Enterprise Security.
DNS	src_port	number	The port number of the source.
DNS	src_priority	string	The priority of the source.
DNS	tag	string	This automatically generated field is used to access tags from within datamodels. Add-on builders do not need to populate it.
DNS	transaction_id	number	The unique numerical transaction id of the network resolution event.
DNS	transport	string	The transport protocol used by the network resolution event.
DNS	ttl	number	The time-to-live of the network resolution event.
DNS	vendor_product	string	The vendor and product name of the DNS server. The Splunk platform can derive this field from the fields vendor and product in the raw data, if they exist.