3 EC2 IP Addresses

EC2 IP Addresses

Types of IP Addresses in EC2

Type	Scope	Static?	Charges?	Use Case
Private IP	Internal	✔ Yes	❌ No	Internal VPC communication
Public IP	Internet	❌ No	❌ No	Quick internet access
Elastic IP (EIP)	Internet	✔ Yes	⚠️ Yes	Static access, failover setups
IPv6	Internet	✔ Yes	❌ No	Global routing, IPv6 access

How to Connect

ssh -i mypem.pem aws-user@hostname

Warning

SG must have ssh inbound Rule

How to Check Public IP? ( AutoAssigned or EIP )

[ec2-user@ip-172-31-7-13 ~]$ curl ipinfo.io

{
  "ip": "3.7.70.216",
  "hostname": "ec2-3-7-70-216.ap-south-1.compute.amazonaws.com",
  "city": "Mumbai",
  "region": "Maharashtra",
  "country": "IN",
  "loc": "19.0728,72.8826",
  "org": "AS16509 Amazon.com, Inc.",
  "postal": "400017",
  "timezone": "Asia/Kolkata",
  "readme": "https://ipinfo.io/missingauth"
}

How to Check Private IP?

ifconfig

or

[ec2-user@ip-172-31-7-13 ~]$ hostname -I
172.31.7.13

Related Topics

• 1 EC2 Overview
• 4 Elastic Network Interface
• Security Groups