A user is accessing an EC2 instance on the SSH port for IP 10.20.30.40/32. Which one is a secure way to configure that the instance can be accessed only from this IP?
A) In the security group, open port 22 for IP 10.20.30.40
B) In the security group, open port 22 for IP 10.20.30.0
C) In the security group, open port 22 for IP 10.20.30.40/32
D) In the security group, open port 22 for IP 10.20.30.40/0

Question

Quizplus · Accepted Answer

Opening port 22 for IP 10.20.30.40/32 in the security group ensures that only the specific IP address 10.20.30.40 can access the EC2 instance via SSH, providing a secure configuration.

A User Is Accessing an EC2 Instance on the SSH