How to Create AWS Security Group
Автор: Hysec Learning
Загружено: 2025-11-20
Просмотров: 1
An AWS Security Group is a virtual firewall for your EC2 instances, RDS databases, Lambda functions (via ENI), and many other AWS resources. It controls inbound and outbound traffic based on rules you define.
Key Points
Stateful: If you allow incoming traffic, the response is automatically allowed.
Attached to resources: Works at the instance/network interface level.
Only allows traffic you specify: No implicit allow, all inbound is blocked by default.
Multiple rules allowed: You can open ports, restrict IP ranges, or allow security group–to–security group traffic.
Components of a Security Group
1. Inbound Rules
Define what can enter your resource.
Example:
Allow HTTP (port 80) from anywhere
Allow SSH (port 22) only from your IP
2. Outbound Rules
Define what your resource can send out.
Default: allow all outbound traffic.
Best Practices
Use least privilege (open only required ports).
Don’t allow SSH/RDP from 0.0.0.0/0 (use your IP or VPN).
Use security group references instead of IPs for internal communication.
Separate SGs for each layer (web, app, DB).
Доступные форматы для скачивания:
Скачать видео mp4
-
Информация по загрузке:
