Security groups and key pairs

Security groups and key pairs are essential components of Amazon EC2 that help ensure the security of your instances. This section will provide an overview of these security features, explaining their role, how they work, and best practices for their use.

Security groups – virtual firewalls for your instances

Security groups act as virtual firewalls that control inbound and outbound traffic to your Amazon EC2 instances. They provide a crucial layer of security by allowing you to specify which traffic is permitted to your instances. Here’s what you need to know about security groups:

• Default and custom security groups: When you create an instance, it’s automatically associated with a default security group, which allows only outbound traffic. To customize your security settings, you can create your own security groups with specific rules.
• Stateful rules: Security group rules are stateful, meaning that if you allow...