I can connect to AWS EC2 Instance using PuTTY at my home by laptop. But when I bring the laptop to some cafe that provides free Wifi, it ends up with timeout error.
In order to solve this problem, I need to fix the security group attached to the EC2 instance to allow the connection from the cafe’s public IP.
Here is what I've done.
1.Log into AWS ec2
Search for "VPC" in the search bar at the top
Click on VPC
Click on "security groups" on the left
After that, I have no idea what should I do. I guess I should register Cafe's IP address to security groups but I don't know how to do...
Please advise me next step.