Use security groups and security group rules as a firewall to control traffic to and from your EC2 instances.

Use a key pair to connect to your Amazon EC2 instance.

Overview of domain

As business needs change, your users need to collaborate effectively to solve business problems as they arise. To solve them, users must share data and models with each other.

Learn how Amazon EC2 provides your instances with public and private IP addresses and DNS hostnames.

To verify the fingerprint of your key pair, compare the fingerprint displayed on the Key pairs page in the Amazon EC2 console, or returned by the describe-key-pairs command, with the fingerprint that you generate using the private key on your local computer. These fingerprints should match.

To help categorize and manage the key pairs that you've either created using Amazon EC2 or imported to Amazon EC2, you can tag them with custom metadata. For more information about how tags work, see .

You can delete a key pair, which removes the public key that is stored in Amazon EC2. Deleting a key pair does not delete the matching private key.

Recover your Amazon EC2 instance automatically by using the default configuration. If an instance becomes impaired because of an underlying hardware failure, the instance is automatically recovered.

Use the Amazon EC2 serial console to diagnose and troubleshoot possible issues with your Amazon EC2 Linux and Windows instances.