Inbound and outbound rules in AWS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What are inbound rules in AWS security groups?

Inbound rules control the incoming traffic allowed to reach your resources, like servers or databases.

beginner

What do outbound rules in AWS security groups do?

Outbound rules control the outgoing traffic that your resources can send out to the internet or other resources.

intermediate

Why is it important to configure both inbound and outbound rules?

Configuring both ensures your resources only accept and send traffic you want, improving security and controlling access.

beginner

If you want to allow web traffic to a server, which inbound rule would you add?

Add an inbound rule allowing TCP traffic on port 80 (HTTP) or 443 (HTTPS) from the internet or trusted sources.

intermediate

What happens if you do not set any outbound rules in a security group?

By default, all outbound traffic is allowed, so your resources can send data out to the internet or other resources.

What does an inbound rule in an AWS security group control?

A Outgoing traffic from your resource

B Incoming traffic to your resource

C Traffic between AWS regions

D Traffic inside your local computer

Inbound rules control the incoming traffic allowed to reach your AWS resources.

Which port is commonly opened in inbound rules to allow web traffic?

A 80

B 22

C 3306

D 25

Port 80 is used for HTTP web traffic and is commonly allowed in inbound rules.

What is the default behavior of outbound rules in a new AWS security group?

A Only HTTP traffic is allowed outbound

B No outbound traffic is allowed

C Only SSH traffic is allowed outbound

D All outbound traffic is allowed

By default, AWS security groups allow all outbound traffic unless restricted.

If you want your server to send emails, which rule should you configure?

A Inbound rule for port 25

B Inbound rule for port 443

C Outbound rule for port 25

D Outbound rule for port 80

Outbound rule for port 25 allows your server to send email traffic out.

Why should you limit inbound rules to specific IP addresses?

A To improve security by restricting access

B To increase server storage

C To allow all users to connect

D To reduce internet speed

Limiting inbound rules to specific IPs helps protect your resources from unauthorized access.

Explain the difference between inbound and outbound rules in AWS security groups.

Think about traffic coming to and leaving your server.

Describe a scenario where you would modify inbound and outbound rules for a web server.

Consider what traffic a web server needs to receive and send.