How to get Network Flow logs in Lightsail?

We have setup a Wordpress instance on Lightsail to simplify operations and host a pretty basic site. This is my first time using Lightsail, and I expected it to be just a facade like Beanstalk, that internally creates the actual EC2 instances and the VPC within the region.
However, the setup seems to be completely isolated from the rest of AWS, and things look very different to configure.
I can see that there is a built-in firewall of sorts and it does not use the "Security Group" resource.
Is there a way to monitor the incoming network traffic like VPC Flow logs?