The port is not opening, what's the problem?

Question

Amazon Web Services

Good afternoon! You need to open a port on the AWS server. There is windows server 2019. I
made the following parameters in the group: I

also added the following rule to the firewall:

But in the end, anyway, portscaner writes that my port is closed ... what could be the problem?

Answer 1

Is your server on a public subnet (it has a route to Internet gateway)? Judging by the screenshot, probably yes. Then check the NACL settings for the subnet as well.