# Connectivity Guides

- [How to connect Digibee to Oracle RAC](https://docs.digibee.com/documentation/troubleshooting/connectivity-guides/digibee-oracle-rac.md): Learn how to establish a connection between Digibee and Oracle RAC via VPN.
- [How to connect Digibee to SAP](https://docs.digibee.com/documentation/troubleshooting/connectivity-guides/digibee-sap.md): Learn how to establish a connection between Digibee and SAP.
- [How to connect Digibee to MongoDB Atlas using VPN](https://docs.digibee.com/documentation/troubleshooting/connectivity-guides/digibee-mongodb.md): Learn how to securely connect the Digibee Integration Platform to MongoDB Atlas using a VPN.
- [How to consume Internal API pipelines using ZTNA](https://docs.digibee.com/documentation/troubleshooting/connectivity-guides/consume-internal-api-pipelines-ztna.md): Learn how to consume and publish pipelines configured as Internal API in realms using ZTNA.
- [How to use Internal API with and without a VPN](https://docs.digibee.com/documentation/troubleshooting/connectivity-guides/use-internal-api-with-and-without-a-vpn.md): Learn how to publish and access an API using the internal gateway on the Digibee Integration Platform.
- [How to perform IP address mapping with Progress database](https://docs.digibee.com/documentation/troubleshooting/connectivity-guides/ip-progressdb.md): Learn how to execute the mapping of IP addresses for the Progress database.
- [How to fix the "Connection refused" error when configuring a VPN](https://docs.digibee.com/documentation/troubleshooting/connectivity-guides/connection-refused-error.md): Learn how to manage Digibee IPs for VPN or internet communication.


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