Internet not accessible in the instance

You are connected to your public subnet instance but, while updating the OS or trying to connect to the internet, you get an error. In this recipe, we will look at the possible reasons for internet related issues.

We will discuss private instances in a later section.

Getting ready

For troubleshooting, you will need access to the server and the VPC.

How to do it...

1. Verify whether the Route Table has the appropriate routes entered for the destination 0.0.0.0/0 via the Internet Gateway.
   1. Log in to the AWS Console | Amazon Virtual Private Cloud (VPC).
   2. Select Route Tables from the navigation pane.

1. 3. Choose the Route Table associated with your subnet instance.

Select Route Table

1. 4. Select the Routes tab. Check whether the default routes (as mentioned in the image) are attached or any customized route is available to the instance.

Check Routes

5. Check whether the Internet Gateway is attached to the VPC:
   1. Log in to the AWS Console and select Amazon Virtual Private Cloud (VPC...