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VM Ports not working.

Hi, I have a GCP VM and I want to place an application on it but it needs to be able to have the ports accessed. But allowing ports specifically, or even allowing all doesn't work.

So I try opening a SSH terminal on a custom port (8080)

I tried adding the firewall in the terminal and manually.
I deleted and added it from the terminal. No way works.
I tried allowing from anywhere on all ports
I tried allowing the specific IP On the specific ports.
I tried making a new VM in a different location.

I set the firewall rules for all instances.

Clicking on the troubleshooting shows no errors.
I saw 2 APIs needed to be enabled at first, but the ports still don't work even after enabling them.

 

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