Security Groups and NACLs
Implement robust network-level security by controlling inbound and outbound traffic for instances and subnets.
Guarding Your AWS Network
Securing your AWS resources is crucial. Think of your cloud environment as a house – you need good locks on the doors and windows.
In AWS, two key services act as virtual firewalls to protect your instances and subnets: Security Groups and Network Access Control Lists (NACLs).
Instance-Level Firewalls
A Security Group acts as a virtual firewall for your EC2 instances (or other resources like RDS instances or Load Balancers).
It controls inbound and outbound traffic at the instance level. When you launch an EC2 instance, you associate one or more security groups with it.
All lessons in this course
- VPC, Subnets, and Route Tables
- Security Groups and NACLs
- IAM Roles and Policies
- VPC Endpoints and Private Connectivity