Unable to open nodejs web app running on azure vm(ubuntu 18.04) in Browser with http://server-public-ip:port-number

Question

Unable to open nodejs web app running on azure vm(ubuntu 18.04) in Browser with http://server-public-ip:port-number

Kingsley M 21

I have deployed my nodejs app and it is running well in the vm.
I have set inbound rules for all necessary ports needed to run application but when I try to open the app in the browser with http://server-public-ip:port-number it throws errors "refused to connect". I also set up DNS name for server and it is still not working.
I have deployed the same application on AWS ec2 and it works with no issues and I can also access it from the browser with no issues.
What could be the issue here? thanks

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Answer 1

Takahito Iwasa 4,851 MVP Volunteer Moderator

Hi, @Kingsley M .
First, I think that you are talking abount Azure Virtual Machine.
so I removed "azure-webapps" tag.

It shoud work.

You said, "I have set inbound rules for all necessary ports needed to run application".
Can you share detail settings abount rule ?
Did you configure Network Security Group ?

Kingsley M 21 Reputation points

2022-12-21T19:22:34.883+00:00

I was getting this error because I set the inbound rules after deploying the app. I had to delete the virtual machine, recreate it, set the inbound rules before deploying the nodejs application and it works now with no issues. Thank you

Answer 2

Lex Li (Microsoft) 6,037 Microsoft Employee

There are two layers of firewall,

one on Ubuntu VM itself, where you need to configure an inbound rule.
the other is between your browser and the Azure VM where you need another inbound rule, https://learn.microsoft.com/en-us/azure/virtual-machines/windows/nsg-quickstart-portal

Which one did you miss?

Kingsley M 21 Reputation points

2022-12-21T19:25:45.31+00:00

ubuntu ufw is diabled by default so the issue was not from there. the inbound rules for the azure vm was the issue. I had set the inbound rules after the deployment instead of doing that before the deployment. i had to delete and recreate. then set inbound rules in azure vm network security group and everything is fine now.
Lex Li (Microsoft) 6,037 Reputation points Microsoft Employee

2022-12-21T19:28:52.183+00:00

That’s impossible to be true. So many people create inbound rules after deployment and never experience such. Anyway, you deleted the old VM so no way to analyze it again.

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Unable to open nodejs web app running on azure vm(ubuntu 18.04) in Browser with http://server-public-ip:port-number

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