How To Configure Amazon EC2 Security Groups

Table of Contents

Overview ....................................................................................................................................................... 2

Applies To ...................................................................................................................................................... 2

Security Groups ............................................................................................................................................. 2

Add Inbound Rules .................................................................................................................................... 2

Inbound Rules – Add Rule ..................................................................................................................... 2

Inbound Rules – Edit Rule ..................................................................................................................... 3

Inbound Rules – SSH Rule ..................................................................................................................... 3

Inbound Rules – HTTP Rule ................................................................................................................... 3

Inbound Rules – All Traffic Rule ............................................................................................................ 3

Inbound Rules – Custom TCP Rule ........................................................................................................ 4

Inbound Rules – List .................................................................................................................................. 4

Outbound Rules – List ............................................................................................................................... 5

Access – Linux Instance ................................................................................................................................. 5

How To Configure Amazon EC2 Security Groups

Overview

The purpose of this document is to configure inbound and outbound firewall rules on Amazon EC2

Instance in the Amazon Console.

Applies To

Amazon EC2 Linux Instance; with IP address 52.0.154.97.

Security Groups

A security group acts as a virtual firewall that controls the traffic for one or more instances. When you

launch an instance, you associate one or more security groups with the instance. You add rules to each

security group that allow traffic to or from its associated instances.

Add Inbound Rules

To access the inbound rules for a instance have to added.

Inbound Rules – Add Rule

To add a new rule, click on “Add Rule” button.

How To Configure Amazon EC2 Security Groups

Inbound Rules – Edit Rule

New rule added to configure the rule, from the “Type” chose the type of

Inbound Rules – SSH Rule

To add and enable SSH communication for the server, choose the type as “SSH”. Optionally you can

choose the source IP, IP Range, My IP (auto-populated) upon choosing.

Inbound Rules – HTTP Rule

To add and enable HTTP communication for the server, choose the type as “HTTP”. Optionally you can

choose the source IP, IP Range, My IP (will auto-populated) upon choosing.

Note: To know the IP of you network, search for what is my IP on web search engine.

Inbound Rules – All Traffic Rule

To add and enable “All Traffic” communication for the server, choose the type as “All Traffic”.

Optionally you can choose the source IP, IP Range, My IP (auto-populated) upon choosing.

How To Configure Amazon EC2 Security Groups

Most of the times “Custom IP” and Security group should be selected, because the traffic is restricted to

internal network.

Inbound Rules – Custom TCP Rule

To add and enable “Custom TCP Rule” communication for the server, choose the type as “Custom TCP

Rule”. Optionally you can choose the source IP, IP Range, My IP (auto-populated) upon choosing.

After adding all the rules, click on “Save” button. To apply the rules.

In this case we are opening TCP Port “2265” and source is set to “Anywhere”.

Inbound Rules – List

To list the inbound rules list, click on “Inbound” of the security group “sg-236c347”.

How To Configure Amazon EC2 Security Groups

Outbound Rules – List

To list the inbound rules list, click on “outbound” of the security group “sg-236c347”.

In this case, “All traffic” is open to all destination.

Access – Linux Instance

In the document we are trying to access IP address “52.0.154.97” via putty SSH protocol.