IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Source Fields

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Source Fields

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Source fields describe details about the source of a packet/event.

Source fields are usually populated in conjunction with destination fields.

Source Field Details

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Field	Description	Level
source.address	Some event source addresses are defined ambiguously. The event will sometimes list an IP, a domain or a unix socket. You should always store the raw address in the `.address` field. Then it should be duplicated to `.ip` or `.domain`, depending on which one it is. type: keyword	extended
source.bytes	Bytes sent from the source to the destination. type: long example: `184`	core
source.domain	Source domain. type: keyword	core
source.ip	IP address of the source. Can be one or multiple IPv4 or IPv6 addresses. type: ip	core
source.mac	MAC address of the source. type: keyword	core
source.nat.ip	Translated ip of source based NAT sessions (e.g. internal client to internet) Typically connections traversing load balancers, firewalls, or routers. type: ip	extended
source.nat.port	Translated port of source based NAT sessions. (e.g. internal client to internet) Typically used with load balancers, firewalls, or routers. type: long	extended
source.packets	Packets sent from the source to the destination. type: long example: `12`	core
source.port	Port of the source. type: long	core

Field Reuse

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Field sets that can be nested under Source

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Nested fields	Description
source.as.*	Fields describing an Autonomous System (Internet routing prefix).
source.geo.*	Fields describing a location.
source.user.*	Fields to describe the user relevant to the event.

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