We are not receiving any server response for an SFTP connection

Questions
1

Hi Community

We are trying to connect to an SFTP server via n8n. However, the connection attempt fails and we receive no feedback from the server. The credentials and IP address etc. are correct, as we have tested the same connection via other middleware.
There is also no visible access attempt in the logs on the server in question. This allows us to see which page or IP the n8n Cloud is using to try to access this SFTP server.
Connection to other servers via FTP works.
What could be the reason for this? Is there a setting we can change here?

We don´t got an error message, we start the credentials about the test button and nothing happens.

The Port is 22

Thanks and regards

Michel

n8n Cloud

Version: 1.121.3

2

This looks like the sFTP server is firewalled, and blocking connections for specific IPs, or ranges. That’s probably why you don’t see any feedback from the server, the connection just hold there for an answer, and there are no traces of incoming connections in the server logs (they never reached it).

Are you using the cloud version of n8n or selfhosting it? If the middleware you used to test it in the same host?

3

Hi. We use the n8n cloud version.

Ok I understand the possible issue with the firewall, but there is the important point. I thought that you can see in the firewall that some unknown ip tried to reached the server. But we don´t see anything in the firewall.

which IP adress or range use the n8n cloud? Maybe we can try to set this adress in the firewall.