> ## Documentation Index
> Fetch the complete documentation index at: https://docs.explo.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Clickhouse

## Intro

Find out more about Clickhouse [here](https://clickhouse.com/).

## Necessary Credentials

* **Hostname**

  * The server where your database lives

  * Example: *rds.amazonaws.com*

* **Port**

  * The port the database server uses

  * Example: *9440*

  * Note that Explo only supports the Clickhouse Native Protocol and other common Clickhouse ports will not work. Ensure the native protocol port over SSL is open. Find out more [here](https://clickhouse.com/docs/en/guides/sre/configuring-ssl#5-configure-ssl-tls-interfaces-on-clickhouse-nodes).

  * Explo's new data connector (FIDO) will be using the HTTPS port, 8443. Please ensure BOTH are allowlisted. If you are onboarding to a new workspace, the Explo team can help you determine which connector you are initially using.

* **Database**

  * Name of the database you are connecting Explo to
  * Example: *acme\_production*

* **Username**

* **Password**

## Allowlisting Explo's IPs

<Note>
  You may need to allowlist egress IPs for your
  [Connectivity Region](/data-sources/connecting-to-data-sources/connectivity-regions).
</Note>

## SSH Tunnels

You can connect to Postgres databases via an SSH tunnel if necessary. Check out [this](/data-sources/connecting-to-data-sources/ssh-tunnels) section on SSH tunnels to see how.

## Questions?

Please reach out to the Explo team at
[support@explo.co](mailto:support@explo.co) if you have any questions.