NTP Activity

The Network Time Protocol (NTP) Activity events report instances of remote clients synchronizing their clocks with an NTP server, as observed on the network.

Attributes

Caption	Name	Type	Description
Action	`action`	String	The normalized caption of `action_id`.
Action ID	`action_id`	Integer	The action taken by a control or other policy-based system leading to an outcome or disposition. Dispositions conform to an action of `1` 'Allowed' or `2` 'Denied' in most cases. Note that `99` 'Other' is not an option. No action would equate to `1` 'Allowed'. An unknown action may still correspond to a known disposition. Refer to `disposition_id` for the outcome of the action. `0`: Unknown (`UNKNOWN`) `1`: Allowed (`ALLOWED`) `2`: Denied (`DENIED`) `99`: Other (`OTHER`)
Activity ID	`activity_id`	Integer	The normalized identifier of the activity that triggered the event. `0`: Unknown (`UNKNOWN`) `1`: Symmetric Active Exchange (`SYMMETRIC_ACTIVE_EXCHANGE`) `2`: Symmetric Passive Response (`SYMMETRIC_PASSIVE_RESPONSE`) `3`: Client Synchronization (`CLIENT_SYNCHRONIZATION`) `4`: Server Response (`SERVER_RESPONSE`) `5`: Broadcast (`BROADCAST`) `6`: Control (`CONTROL`) `7`: Private Use Case (`PRIVATE_USE_CASE`) `99`: Other (`OTHER`)
Activity	`activity_name`	String	The event activity name, as defined by the activity_id.
Actor	`actor`	Actor[]	The actor object describes details about the user/role/process that was the source of the activity.
API Details	`api`	API[]	Describes details about a typical API (Application Programming Interface) call.
Application Name	`app_name`	String	The name of the application associated with the event or object.
MITRE ATT&CK® Details	`attacks`	MITRE ATT&CK®[]	An array of MITRE ATT&CK® objects describing the tactics, techniques & sub-techniques identified by a security control or finding.
Authorization Information	`authorizations`	Authorization Result[]	Provides details about an authorization, such as authorization outcome, and any associated policies related to the activity/event.
Category	`category_name`	String	The event category name, as defined by category_uid value.
Category ID	`category_uid`	Integer	The category unique identifier of the event. `4`: Network Activity (`NETWORK_ACTIVITY`)
Class	`class_name`	String	The event class name, as defined by class_uid value.
Class ID	`class_uid`	Integer	The unique identifier of a class. A class describes the attributes available in an event. `4013`: NTP Activity (`NTP_ACTIVITY`)
Cloud	`cloud`	Cloud[]	Describes details about the Cloud environment where the event was originally created or logged.
Confidence	`confidence`	Integer	The confidence of the reported event severity as a percentage: 0%-100%. 🚧 WARNING: DEPRECATED Confidence has been deprecated since 1.1.0. Deprecated in upgrade from ocsf-0.31.1 to qdm-1.1.0
Connection Info	`connection_info`	Network Connection Information[]	The network connection information.
Count	`count`	Integer	The number of times that events in the same logical group occurred during the event Start Time to End Time period.
Data	`data`	JSON	Additional data that is associated with the event. 🚧 WARNING: DEPRECATED Data has been deprecated since 1.1.0. Deprecated in upgrade from ocsf-0.31.1 to qdm-1.1.0
Root Delay	`delay`	Integer	The total round-trip delay to the reference clock in milliseconds.
Device	`device`	Device[]	An addressable device, computer system or host.
Root Dispersion	`dispersion`	Integer	The dispersion in the NTP protocol is the estimated time error or uncertainty relative to the reference clock in milliseconds.
Disposition	`disposition`	String	The disposition name, normalized to the caption of the disposition_id value. In the case of 'Other', it is defined by the event source.
Disposition ID	`disposition_id`	Integer	Describes the outcome or action taken by a security control, such as access control checks, malware detections or various types of policy violations. `0`: Unknown (`UNKNOWN`) `1`: Allowed (`ALLOWED`) `10`: Exonerated (`EXONERATED`) `11`: Corrected (`CORRECTED`) `12`: Partially Corrected (`PARTIALLY_CORRECTED`) `13`: Uncorrected (`UNCORRECTED`) `14`: Delayed (`DELAYED`) `15`: Detected (`DETECTED`) `16`: No Action (`NO_ACTION`) `17`: Logged (`LOGGED`) `18`: Tagged (`TAGGED`) `19`: Alert (`ALERT`) `2`: Blocked (`BLOCKED`) `20`: Count (`COUNT`) `21`: Reset (`RESET`) `22`: Captcha (`CAPTCHA`) `23`: Challenge (`CHALLENGE`) `24`: Access Revoked (`ACCESS_REVOKED`) `25`: Rejected (`REJECTED`) `26`: Unauthorized (`UNAUTHORIZED`) `27`: Error (`ERROR`) `3`: Quarantined (`QUARANTINED`) `4`: Isolated (`ISOLATED`) `5`: Deleted (`DELETED`) `6`: Dropped (`DROPPED`) `7`: Custom Action (`CUSTOM_ACTION`) `8`: Approved (`APPROVED`) `9`: Restored (`RESTORED`) `99`: Other (`OTHER`)
Destination Endpoint	`dst_endpoint`	Network Endpoint[]	The responder (server) in a network connection.
Duration	`duration`	Long	The event duration or aggregate time, the amount of time the event covers from `start_time` to `end_time` in milliseconds.
End Time	`end_time`	Timestamp	The end time of a time period, or the time of the most recent event included in the aggregate event.
Enrichments	`enrichments`	Enrichment[]	The additional information from an external data source, which is associated with the event or a finding. For example add location information for the IP address in the DNS answers: `[{"name": "answers.ip", "value": "92.24.47.250", "type": "location", "data": {"city": "Socotra", "continent": "Asia", "coordinates": [-25.4153, 17.0743], "country": "YE", "desc": "Yemen"}}]`
Firewall Rule	`firewall_rule`	Firewall Rule[]	The firewall rule that triggered the event.
JA4+ Fingerprints	`ja4_fingerprint_list`	JA4+ Fingerprint[]	A list of the JA4+ network fingerprints.
Load Balancer	`load_balancer`	Load Balancer[]	The Load Balancer object contains information related to the device that is distributing incoming traffic to specified destinations.
Malware	`malware`	Malware[]	A list of Malware objects, describing details about the identified malware.
Message	`message`	String	The description of the event/finding, as defined by the source.
Metadata	`metadata`	Metadata[]	The metadata associated with the event or a finding.
Observables	`observables`	Observable[]	The observables associated with the event or a finding.
OSINT	`osint`	OSINT[]	The OSINT (Open Source Intelligence) object contains details related to an indicator such as the indicator itself, related indicators, geolocation, registrar information, subdomains, analyst commentary, and other contextual information. This information can be used to further enrich a detection or finding by providing decisioning support to other analysts and engineers.
Precision	`precision`	Integer	The NTP precision quantifies a clock's accuracy and stability in log2 seconds, as defined in RFC-5905.
Proxy	`proxy`	Network Proxy Endpoint[]	The proxy (server) in a network connection. 🚧 WARNING: DEPRECATED Proxy has been deprecated since 1.1.0. Use the `proxy_endpoint` attribute instead.
Proxy Connection Info	`proxy_connection_info`	Network Connection Information[]	The connection information from the proxy server to the remote server.
Proxy Endpoint	`proxy_endpoint`	Network Proxy Endpoint[]	The proxy (server) in a network connection.
Proxy HTTP Request	`proxy_http_request`	HTTP Request[]	The HTTP Request from the proxy server to the remote server.
Proxy HTTP Response	`proxy_http_response`	HTTP Response[]	The HTTP Response from the remote server to the proxy server.
Proxy TLS	`proxy_tls`	Transport Layer Security (TLS)[]	The TLS protocol negotiated between the proxy server and the remote server.
Proxy Traffic	`proxy_traffic`	Network Traffic[]	The network traffic refers to the amount of data moving across a network, from proxy to remote server at a given point of time.
Raw Data	`raw_data`	JSON	The event data as received from the event source.
Record ID	`record_id`	String	Unique idenifier for the event
Severity	`severity`	String	The event/finding severity, normalized to the caption of the severity_id value. In the case of 'Other', it is defined by the source.
Severity ID	`severity_id`	Integer	The normalized identifier of the event/finding severity. The normalized severity is a measurement the effort and expense required to manage and resolve an event or incident. Smaller numerical values represent lower impact events, and larger numerical values represent higher impact events. `0`: Unknown (`UNKNOWN`) `1`: Informational (`INFORMATIONAL`) `2`: Low (`LOW`) `3`: Medium (`MEDIUM`) `4`: High (`HIGH`) `5`: Critical (`CRITICAL`) `6`: Fatal (`FATAL`) `99`: Other (`OTHER`)
Source Endpoint	`src_endpoint`	Network Endpoint[]	The initiator (client) of the network connection.
Start Time	`start_time`	Timestamp	The start time of a time period, or the time of the least recent event included in the aggregate event.
Status	`status`	String	The event status, normalized to the caption of the status_id value. In the case of 'Other', it is defined by the event source.
Status Code	`status_code`	String	The event status code, as reported by the event source. For example, in a Windows Failed Authentication event, this would be the value of 'Failure Code', e.g. 0x18.
Status Details	`status_detail`	String	The status detail contains additional information about the event/finding outcome.
Status ID	`status_id`	Integer	The normalized identifier of the event status. `0`: Unknown (`UNKNOWN`) `1`: Success (`SUCCESS`) `2`: Failure (`FAILURE`) `99`: Other (`OTHER`)
Stratum	`stratum`	String	The stratum level of the NTP server's time source, normalized to the caption of the stratum_id value.
Stratum ID	`stratum_id`	Integer	The normalized identifier of the stratum level, as defined in RFC-5905. `0`: Unknown (`UNKNOWN`) `1`: Primary Server (`PRIMARY_SERVER`) `16`: Unsynchronized (`UNSYNCHRONIZED`) `17`: Reserved (`RESERVED`) `2`: Secondary Server (`SECONDARY_SERVER`) `99`: Other (`OTHER`)
Event Time	`time`	Timestamp	The normalized event occurrence time or the finding creation time.
Timezone Offset	`timezone_offset`	Integer	The number of minutes that the reported event `time` is ahead or behind UTC, in the range -1,080 to +1,080.
TLS	`tls`	Transport Layer Security (TLS)[]	The Transport Layer Security (TLS) attributes.
Traffic	`traffic`	Network Traffic[]	The network traffic refers to the amount of data moving across a network at a given point of time. Intended to be used alongside Network Connection.
Type Name	`type_name`	String	The event/finding type name, as defined by the type_uid.
Type ID	`type_uid`	Long	The event/finding type ID. It identifies the event's semantics and structure. The value is calculated by the logging system as: `class_uid * 100 + activity_id`. `401300`: NTP Activity: Unknown (`NTP_ACTIVITY_UNKNOWN`) `401301`: NTP Activity: Symmetric Active Exchange (`NTP_ACTIVITY_SYMMETRIC_ACTIVE_EXCHANGE`) `401302`: NTP Activity: Symmetric Passive Response (`NTP_ACTIVITY_SYMMETRIC_PASSIVE_RESPONSE`) `401303`: NTP Activity: Client Synchronization (`NTP_ACTIVITY_CLIENT_SYNCHRONIZATION`) `401304`: NTP Activity: Server Response (`NTP_ACTIVITY_SERVER_RESPONSE`) `401305`: NTP Activity: Broadcast (`NTP_ACTIVITY_BROADCAST`) `401306`: NTP Activity: Control (`NTP_ACTIVITY_CONTROL`) `401307`: NTP Activity: Private Use Case (`NTP_ACTIVITY_PRIVATE_USE_CASE`) `401399`: NTP Activity: Other (`NTP_ACTIVITY_OTHER`)
Unmapped Data	`unmapped`	Unmapped[]	The attributes that are not mapped to the event schema. The names and values of those attributes are specific to the event source.
Version	`version`	String	The version number of the NTP protocol.

Relationships

Outbound Relationships

NTP Activity references the following objects and events in its attributes:

This page describes qdm-1.3.2+ocsf-1.3.0