Unable to SSH into an IPv6 VM instance

Google Cloud Compute Infrastructure
1

I am unable to SSH into a VM instance bearing an external IPv6 address.

I have a firewall rule as follows:

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What am i missing here?

2

Hi @mountaincode2 ,

Welcome to Google Cloud Community

There are several possible reasons why you’re not able to SSH into a VM instance using an external IPv6 address. Here are few things you need to check:

  1. Ensure your firewall target tag is the same with your VM instance network tag so firewall rules will be applied to the VM instance.
  2. Make sure that you add the public SSH key to your VM instance Metadata.

For better security, we strongly advise against making SSH directly accessible from the internet. IAP TCP forwarding offers a more secure way to connect externally, acting as a protected gateway between you and your VM, much like a bastion host does.

Also, You can check this document on common problems with ssh.

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