Connecting n8n Cloud to a Local Cobra Database – Questions About Communication & Protocols

Questions
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Hi everyone,

We’re currently working on connecting our n8n Cloud instance to a locally hosted Cobra database, in coordination with our IT service provider.

One key question that has come up:

How exactly does the communication between n8n Cloud and our on-premise database work?
Which protocols and ports are used for the data exchange?
(For example, web traffic typically runs over HTTPS via port 443.)

Our IT provider needs this information to properly and securely configure the connection — especially regarding firewall rules or possible VPN requirements.

Has anyone here set up a similar connection, or could someone from the n8n team provide technical details on how this type of communication is handled?

Thanks in advance!

Best regards,
TCS

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Hey @yung-t
Yes, connection is possible over HTTPS as far as I know.

n8n cloud also publishes their IP addresses for their servers here - Cloud IP addresses | n8n Docs. This can be helpful in allowing your team to configure your organisation’s firewall to whitelist the connection from n8n cloud while blocking others.

Don’t rely entirely on this though and always use strong credentials when communicating between the servers!

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