I am not able to connect to internet in my EC2 Linux instance

Question

I have an EC2 Amazon linux instance when I connect to it via browser or via putty, I am not able to connect to the internet. means i am not able to do tasks like:
a. sudo apt update 
b. install any python libraries via pip
when I check for internet using ping 8.8.8.8, I only end up getting this -- "PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data."

I couldn't find a solution for it. 
I followed the steps mentioned here but no use: https://docs.aws.amazon.com/vpc/latest/userguide/VPC_Internet_Gateway.html#vpc-igw-internet-access
Any help would be greatly appreciated. thanks

Steve Kinsman · Answer

How are you reaching your instance via putty?  VPN or Direct Connect for example?

If you want the instance to be public then give it a public IP and ensure you have a default route in its subnet route table for 0.0.0.0/0 to the Internet Gateway (this makes it a public subnet).  Have your instance's security group allow all outbound traffic.  Have your subnet ACLs open as default.

If you want only outbound internet access then out it in a "NAT" subnet with a default route to a NAT Gateway that's in a public subnet.

I am not able to connect to internet in my EC2 Linux instance

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