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You have an EC2 instance in a private subnet without a public IP. How can you connect to it securely?

hard📝 Application Q9 of 15
AWS - EC2 Fundamentals
You have an EC2 instance in a private subnet without a public IP. How can you connect to it securely?
AConnect using RDP on port 3389
BAssign a public IP to the private instance directly
CUse FTP to transfer files and connect
DUse a bastion host in a public subnet to SSH into the private instance
Step-by-Step Solution
Solution:

  1. Step 1: Understand private subnet connectivity limits

    Instances in private subnets lack direct internet access and public IPs.

  2. Step 2: Use bastion host as a jump server

    A bastion host in a public subnet acts as a secure gateway to private instances.

  3. Final Answer:

    Use a bastion host in a public subnet to SSH into the private instance -> Option D

  4. Quick Check:

    Private subnet access via bastion host [OK]
Quick Trick: Use bastion host to reach private subnet instances [OK]
Common Mistakes:
MISTAKES
  • Trying to assign public IP directly
  • Using RDP for Linux instances
  • Using FTP for connection

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