There were templates for Ubuntu, for instance, that I used. I used it if I remember, going to 20.04, I guess. It was ready, and I just used the template and it worked well. There is a template for Windows Server, but I didn't test them. 

Also, the configurations over the firewall in the console work very good for the purpose that we need to isolate it from the internet but allow the connection from specific IP addresses in specific ports. 

So the filtering in the Lightsail Firewall works good. And I am able to isolate the virtual machine well from the internet in order to avoid DDoS attacks and stuff like that.

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