## Provide SSL certificates

URL: https://docs.atlan.com/product/connections/how-tos/provide-ssl-certificates

> SSL (Secure Sockets Layer) encryption helps establish a secure connection between your data source and Atlan. Atlan currently supports SSL certificates for [crawling Tableau](/apps/connectors/business-intelligence/tableau/how-tos/crawl-tableau) and [crawling Matillion](/apps/connectors/etl-tools/matillion/how-tos/crawl-matillion).

SSL (Secure Sockets Layer) encryption helps establish a secure connection between your data source and Atlan. Atlan currently supports SSL certificates for [crawling Tableau](https://docs.atlan.com/llms/connectors/tableau/crawl-tableau/llms.txt) and [crawling Matillion](https://docs.atlan.com/llms/connectors/matillion/crawl-matillion/llms.txt).

The following types of SSL certificates are supported:

## Self-signed

Paste the public `.crt` or `.cert` part of your TLS certificate in the Privacy Enhanced Mail (PEM) format. For example:

```
----BEGIN CERTIFICATE----
MIIDazCCAlOgAwIBAgIJAOqRDRz0BxIAMA0GCSqGSIb3DQEBCwUAMIGZMQswCQYD
...
...
...
u1Q==
----END CERTIFICATE----
```

## Internal CA

An SSL certificate chain is a sequence of certificates consisting of three parties:

- A root certificate authority,
- One or more intermediate certificate authorities,
- And the server certificate.

Paste the root, intermediate, and server certificates in the following format:

```
----BEGIN CERTIFICATE----
ABCDE......
----END CERTIFICATE----
----BEGIN CERTIFICATE----
EFGHT......
----END CERTIFICATE----
----BEGIN CERTIFICATE----
NAMNOP......
----END CERTIFICATE----
----BEGIN CERTIFICATE----
KROPS......
----END CERTIFICATE----
```

- The top certificate is the root certificate
- Followed by the hops in the right sequence
- Ending with server certificate

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