56 lines
1.5 KiB
Markdown
56 lines
1.5 KiB
Markdown
## AWS EC2 - Security Groups
|
|
|
|
### Requirements
|
|
|
|
For this exercise you'll need:
|
|
|
|
1. EC2 instance with web application
|
|
2. Security group inbound rules that allow HTTP traffic
|
|
|
|
### Objectives
|
|
|
|
1. List the security groups you have in your account, in the region you are using
|
|
2. Remove the HTTP inbound traffic rule
|
|
3. Can you still access the application? What do you see/get?
|
|
4. Add back the rule
|
|
5. Can you access the application now?
|
|
|
|
### Solution
|
|
|
|
#### Console
|
|
|
|
1. Go to EC2 service - > Click on "Security Groups" under "Network & Security"
|
|
You should see at least one security group. One of them is called "default"
|
|
2. Click on the security group with HTTP rules and click on "Edit inbound rules".
|
|
Remove the HTTP related rules and click on "Save rules"
|
|
3. No. There is a time out because we removed the rule allowing HTTP traffic.
|
|
4. Click on the security group -> edit inbound rules and add the following rule:
|
|
* Type: HTTP
|
|
* Port range: 80
|
|
* Source: Anywhere -> 0.0.0.0/0
|
|
5. yes
|
|
|
|
#### CLI
|
|
|
|
1. `aws ec2 describe-security-groups` -> by default, there is one security group called "default", in a new account
|
|
2. Remove the rule:
|
|
|
|
```
|
|
aws ec2 revoke-security-group-ingress \
|
|
--group-name someHTTPSecurityGroup
|
|
--protocol tcp \
|
|
--port 80 \
|
|
--cidr 0.0.0.0/0
|
|
```
|
|
3. No. There is a time out because we removed the rule allowing HTTP traffic.
|
|
4. Add the rule we remove:
|
|
|
|
```
|
|
aws ec2 authorize-security-group-ingress \
|
|
--group-name someHTTPSecurityGroup
|
|
--protocol tcp \
|
|
--port 80 \
|
|
--cidr 0.0.0.0/0
|
|
```
|
|
5. yes
|