How to access ec2 instance residing in private subnet

Steps:

• Create a VPC
• It will by default create router,securty groups ,NACLS, route tables
• Create internet gateway
• Create 2 subnet in the VPC
• One public subnet, one private subnet
• Create one route table in which allow traffic from internet(0.0.0.0/0) to come to RT and associate the Internet gateway u created
• Now associate the public subnet u have created with the above route table
• Create one security group for public subnet and allow icmp,http,ssh,https traffic stateful traffic
  
  —-At this point if u launch a instance in public subnet of the custom VPC you will be able to ssh and run a yum update using IG

If u are not creating another route table your private or any other subnet will by default associate with the main RT(always keep main RT as pvt)create a security group for private subnet as well and allow traffic only from the pubic subnet CIDR , if u want to ssh into private instance using ssh pem

• Once u ssh into private instance , try running yum update it will fail for sure.
• for pvt instance to access internet , create a NAT gateway in public subnet and associate the NAT gateway with main route table .

 643 total views,  1 views today