# Configure NetoDNS

*You can run NetoDNS with the default configuration, which should be sufficient for most deployments.*

## Modifying the configuration

NetoDNS uses environment variables to set configuration. All configuration uses the prefix `NETO_`

Follow the steps in the install instructions for your chosen deployment method to edit and pass the configuration settings:

[Install NetoDNS (container)](/netodns/install-netodns-container.md) or [Install NetoDNS (Linux package)](/netodns/install-netodns-linux-package.md)

## Configuration settings

| **Environment Variable**  | **Description**                                                        | **Default Value** | **Example**                                                    |
| ------------------------- | ---------------------------------------------------------------------- | ----------------- | -------------------------------------------------------------- |
| `NETO_PROTOCOL`           | Protocol to listen on (e.g., `tcp`, `udp`).                            | `tcp`             | `NETO_PROTOCOL=udp`                                            |
| `NETO_PORT`               | Port to listen on.                                                     | `514`             | `NETO_PORT=10514`                                              |
| `NETO_OUTPUT_FILE`        | Path to the output file where logs are written.                        | None              | `NETO_OUTPUT_FILE=/var/log/netodns.log`                        |
| `NETO_DATASRC`            | Data source identifier for processing logs.                            | None              | `NETO_DATASRC=EXAMPLE-SOURCE`                                  |
| `NETO_EXCLUDE_QUERIES`    | Comma-separated list of query names to exclude.                        | None              | `NETO_EXCLUDE_QUERIES=example.com,foo.com`                     |
| `NETO_EXCLUDE_QUERIES_RE` | Comma-separated list of regular expressions for excluding query names. | None              | `NETO_EXCLUDE_QUERIES_RE=.*\\.example\\.com$,.*\\.test\\.com$` |
| `NETO_INTERVAL`           | Interval for periodic tasks (in seconds).                              | `30`              | `NETO_INTERVAL=60`                                             |
| `NETO_ENDPOINT__APPNAME`  | Application name for the endpoint.                                     | None              | `NETO_ENDPOINT__APPNAME=my-app`                                |
| `NETO_ENDPOINT__CUSTOMER` | Customer identifier for the endpoint.                                  | None              | `NETO_ENDPOINT__CUSTOMER=my-customer`                          |
| `NETO_NETOSECRET`         | API key used for authenticating to Fusion                              | None              | `NETO_NETOSECRET=my-secret-key`                                |
| `NETO_PROXY__ENABLED`     | Whether to enable proxy support (true/false).                          | `false`           | `NETO_PROXY__ENABLED=true`                                     |
| `NETO_PROXY__URL`         | URL of the proxy server.                                               | None              | `NETO_PROXY__URL=http://proxy.example.com`                     |
| `NETO_ENDPOINT__RETRYMIN` | Minimum retry interval for token requests (in seconds).                | `300`             | `NETO_ENDPOINT__RETRYMIN=5`                                    |
| `NETO_ENDPOINT__RETRYMAX` | Maximum retry interval for token requests (in seconds).                | `600000`          | `NETO_ENDPOINT__RETRYMAX=300000`                               |


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