NetBox supports integration with the [NAPALM automation](https://github.com/napalm-automation/napalm) library. NAPALM allows NetBox to serve a proxy for operational data, fetching live data from network devices and returning it to a requester via its REST API. Note that NetBox does not store any NAPALM data locally.
To make NAPALM requests via the NetBox REST API, a NetBox user must have assigned a permission granting the `napalm_read` action for the device object type.
By default, the [`NAPALM_USERNAME`](../configuration/napalm.md#napalm_username) and [`NAPALM_PASSWORD`](../configuration/napalm.md#napalm_password) configuration parameters are used for NAPALM authentication. They can be overridden for an individual API call by specifying the `X-NAPALM-Username` and `X-NAPALM-Password` headers.
The list of supported NAPALM methods depends on the [NAPALM driver](https://napalm.readthedocs.io/en/latest/support/index.html#general-support-matrix) configured for the platform of a device. Because there is no granular mechanism in place for limiting potentially disruptive requests, NetBox supports only read-only [get](https://napalm.readthedocs.io/en/latest/support/index.html#getters-support-matrix) methods.
The behavior of NAPALM drivers can be adjusted according to the [optional arguments](https://napalm.readthedocs.io/en/latest/support/index.html#optional-arguments). NetBox exposes those arguments using headers prefixed with `X-NAPALM-`. For example, the SSH port is changed to 2222 in this API call: