I have a instance Linux in an EC2 service that was working before I changed the security group in order to accept HTTP port 80.
Before that change it was only port 22, SSH, we see in the picture below:
After I added HTTP I can't get access trough the terminal and get Time out operation error.
How to solve this issue?
If you stopped the instance, and then started it (not a reboot) then the public IP will change. You can attach an Elastic IP address to prevent that.