Securing SSH
There isn't much running on most Civo instances by default, but SSH is always installed. Here are some ideas/best practices to help you secure your instances.
Firewalling an Ubuntu 16.04 instance
There are two main ways we'd recommend users to secure their Ubuntu instances by creating a firewall - using our platform or internally on the instance using UFW.
Putting Your Instance Into Rescue Mode
If you have major problems at the OS root level, Openstack allows you to put your instance into a rescue state, which can help you access your instance and rectify the problems, before restoring it to its active state.