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SSH blocked with firewall, so I cannot connect.

in OCI - General 5 comments

Summary:

I'm using a free-tier compute instances to host a server on Oracle Cloud, but today I accidentally did something with the firewall (either UFW or firewalld, not sure which one) and now SSH-ing gives me an error saying:

ssh: connect to host {the server's ip} port 22: Connection timed out

Rebooting the instance does not help, and I cannot find a way to connect to undo the mistake. I heard someone say you could make a new volume or attach it to a different server, but the issue with that is I have used all the resources in the free tier (aka all RAM, ARM cores, and 200GB for the boot volume), so I would go over the limit and paying is not an option. Nothing I seem to do is working, so if anyone can help me somehow access the terminal on the instance, that would be appreciated. And

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