Beyond the Public Subnet: Architecting a Bastion Host with Session Manager for Zero-Trust Access
The command is burned into the memory of every cloud engineer: ssh -i key.pem [email protected]. It’s the classic digital key to the kingdom—the bastion host sitting in a public subnet, bravely facing the internet with port 22 open. I’ve walked into countless environments where this was the standard operating procedure. And every single time, it’s…