Linux · Server & Cloud Setup

By default an EC2 instance won't even answer a ping. Which single port does the auto-created security group open, and what must you do for a web server?

Sign in to see the full answer — free to start on the web.

This is one card from the KnowCard library. The full way to learn it — spaced-repetition review, progress tracking, and AI explanations — lives in the KnowCard app, free to start on the web. iOS & Android are coming soon.

Get started — it’s free

Already have an account? Sign in →

More in Server & Cloud Setup

AWS calls the private network your EC2 instances live in a VPC. What isolation guarantee does that provide?
Why do most server installations deliberately run in text mode with no GUI, rather than just reusing a desktop image?
Where does the term root server come from, and what does it imply about your control of the machine?
A colleague sets up a cloud instance and wants to configure RAID-1 and LVM the way they would on bare metal. What is the catch?
On real hardware or a provider root server, what disk-redundancy setup is recommended, and why does that recommendation flip on a VM or cloud instance?
You give a new internet-facing server the bare domain example.com as its hostname. Why will this decision come back to bite you?