> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/xsiam-data-model-schema/fields/source.md).

# xdm.source

Information about the source of the activity

## Field groups

* [`xdm.source.host`](/xsiam-data-model-schema/fields/source/host.md)
* [`xdm.source.agent`](/xsiam-data-model-schema/fields/source/agent.md)
* [`xdm.source.identity`](/xsiam-data-model-schema/fields/source/identity.md)
* [`xdm.source.user`](/xsiam-data-model-schema/fields/source/user.md)
* [`xdm.source.location`](/xsiam-data-model-schema/fields/source/location.md)
* [`xdm.source.process`](/xsiam-data-model-schema/fields/source/process.md)
* [`xdm.source.application`](/xsiam-data-model-schema/fields/source/application.md)
* [`xdm.source.asn`](/xsiam-data-model-schema/fields/source/asn.md)
* [`xdm.source.cloud`](/xsiam-data-model-schema/fields/source/cloud.md)
* [`xdm.source.virtualization`](/xsiam-data-model-schema/fields/source/virtualization.md)

## Fields

#### `xdm.source.user_agent`

|             |                        |
| ----------- | ---------------------- |
| Description | The source user-agent. |
| Datatype    | String                 |
| Dataclass   | Scalar                 |

#### `xdm.source.ipv4`

|             |                                          |
| ----------- | ---------------------------------------- |
| Description | The source IPv4 address of the activity. |
| Datatype    | IPv4                                     |
| Dataclass   | Scalar                                   |

#### `xdm.source.ipv6`

|             |                                          |
| ----------- | ---------------------------------------- |
| Description | The source IPv6 address of the activity. |
| Datatype    | IPv6                                     |
| Dataclass   | Scalar                                   |

#### `xdm.source.is_internal_ip`

|             |                                                                  |
| ----------- | ---------------------------------------------------------------- |
| Description | Whether the source IP address is internal (auto-enriched field). |
| Datatype    | Boolean                                                          |
| Dataclass   | Scalar                                                           |

#### `xdm.source.port`

|             |                  |
| ----------- | ---------------- |
| Description | The source port. |
| Datatype    | Number           |
| Dataclass   | Scalar           |

#### `xdm.source.sent_bytes`

|             |                                                     |
| ----------- | --------------------------------------------------- |
| Description | The amount of bytes transmitted by the source host. |
| Datatype    | Number                                              |
| Dataclass   | Scalar                                              |
| Unit        | Bytes                                               |

#### `xdm.source.sent_packets`

|             |                                                       |
| ----------- | ----------------------------------------------------- |
| Description | The amount of packets transmitted by the source host. |
| Datatype    | Number                                                |
| Dataclass   | Scalar                                                |

#### `xdm.source.interface`

|             |                                                         |
| ----------- | ------------------------------------------------------- |
| Description | The source interface address (usually the MAC address). |
| Datatype    | String                                                  |
| Dataclass   | Scalar                                                  |

#### `xdm.source.zone`

|             |                                     |
| ----------- | ----------------------------------- |
| Description | The region/zone of the source host. |
| Datatype    | String                              |
| Dataclass   | Scalar                              |

#### `xdm.source.subnet`

|             |                                                        |
| ----------- | ------------------------------------------------------ |
| Description | The subnet of the source IP address, in CIDR notation. |
| Datatype    | String                                                 |
| Dataclass   | Scalar                                                 |
| Examples    | 198.51.100.0/22, 2001:db8::/48                         |

#### `xdm.source.vlan`

|             |                              |
| ----------- | ---------------------------- |
| Description | The VLAN of the source host. |
| Datatype    | Number                       |
| Dataclass   | Scalar                       |


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