Getting an "is publicly available" warning -- how to restrict?
I started getting this warning, in the Matillion app.
I did read this article:
My EC2 instance that hosts Matillion is in a VPC, and it does have a security group attached. However, the attached security group currently allows ALL inbound traffic. I am guessing that is why I am getting the warning -- right?
Then, how should I restrict it?
What people/systems make inbound requests to the instance? I'm thinking maybe it is only users of the Matillion app. I think that while Matillion programmatically makes many outbound requests to other systems, there are no systems that make any programmatic requests into Matillion. Does that sound right? So, should I only allow inbound traffic from the IP addresses (or ranges) of the users who log into and use the Matillion app?