Cannot access Google Cloud Compute Instance External IP

Question

I have set up an Google Cloud Compute Instance:

• Machine type
  • n1-standard-1 (1 vCPU, 3.75 GB memory)
• CPU platform
  • Intel Haswell
• Zone
  • us-east1-c

I can ssh in using the external address.

I have installed the vncserver and can access it on port 5901 from localhost as well as the internal IP.

I am trying to access it from the static, external IP address but it is not working.

I have configured the firewall to open to port to 0.0.0.0/0 , but it is not reachable.

Can anyone help?

------after further investigation from the tips from the two answers (thanks, both,): I have a partial answer:

The Google Cloud Compute instance was set, by default, to not allow HTTP traffic. I reset the configuration to allow HTTP traffic. I then tried the troubleshooting tip to run a small HTTP service in python. I was able to get a ressponse from the service over the inte.net.

The summary of the current situation is as follows:

• The external IP address can be reached
• It is enabled and working for SSH
• It is enabled and working for HTTP
• It does not seem to allow traffic from vncserver

Any idea how to configure the compute instance to allow for vncserver traffic?

Answer 1

If you already verified that Google Firewall or your VM are not blocking packets, you must make sure that VNC service is configured to listen on the external IP address .

You can always use a utility like nmap outside Google project to reveal information on the port status.

Answer 2

enable http/https traffic form the firewall as per the need. it will work!!

Answer 3

The Google Cloud Compute instance was set, by default, to not allow HTTP traffic. I reset the configuration to allow HTTP traffic. I then tried the troubleshooting tip to run a small HTTP service in python. I was able to get a response from the service over the internet.

As such, the original question is answered, I can access Google Cloud Compute Instance External IP. My wider issue is still not solved, but I will post a new, more specific question about this issue

Answer 4

Create an entry in your local ssh config file as below with mentioned local forward port. In my case its an example of yarn's IP, which I want to access in browser.

Host hadoop
     HostName <External-IP>
     User <Local-machine-username>
     IdentityFile ~/.ssh/<private-key-for-above-user>
     LocalForward 8089 <Internal-IP>:8088

Answer 5

In addition to having the firewall rules to allow HTTP traffic in both Google Cloud Platform and within the OS of the instance, make sure you install a web server such as Apache or Nginx.

After installing the web server, you connect to the instance using SSH and verify you do not get a failed connection with the following command:

$ sudo wget http://localhost

If the connection is positive, it means that you can access your external URL:

http://<IP-EXTERNAL-VM>

Answer 6

TLDR: make sure you are requesting http not https

In my case i was following the link from my CE instance's External Ip property which takes you directly to the https version and i didn't set up https, so that was causing the 'site not found' error.

Answer 7

Usually there are two main things to check.

1. Port

By default, only port 80, 443 and ICMP are exposed. If your server is running on a different port, create a record for the same.

2. Firewall

Make sure you are allowing http and https traffic based on your need. oua re

Answer 8

对我来说，问题是我将防火墙规则的流量设置为“出口”而不是“入口”。

Answer 9

If anyone already initiated 'https' just disable it and check again.