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Opening ports and Default Firewall on Canonical Ubuntu 24.04 OCI instance

edited Dec 2, 2024 10:17PM in Linux Operating System (MOSC) 10 commentsAnswered

Howdy!

I have been trying to figure out what firewall is running on a cloud compute instance running Canonical Ubuntu 24.04 VM. All ports except port 22 are closed.

Now I know that ufw is not used and firewalld is also not installed by default.

I have already tried the IP tables on the Linux VM even purging them completely, and resetting the machine. I have also adjusted the security lists in the VCN to allow all ports.

I still get closed ports on all but port 22.

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