Can't open specific ports on VM

ChNa 26 Reputation points
2021-04-16T16:26:13.98+00:00

Hi, i try to open port 30001-30003 for my AzureVM.
It is opened in the security group (inbound) and the firewall on the machine itself is also configured to accept those two ports (tcp/UDP).
Source is "any".
But when I check it with a port scanner then it says that the port is closed. What am I doing wrong?
VM is Win10, Standard_b2ms

Azure Firewall
Azure Firewall
An Azure network security service that is used to protect Azure Virtual Network resources.
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Azure Virtual Machines
Azure Virtual Machines
An Azure service that is used to provision Windows and Linux virtual machines.
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2 answers

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  1. Manu Philip 14,061 Reputation points MVP
    2021-04-16T18:07:13.167+00:00

    Make sure that you followed the documentation correctly
    nsg-quickstart-portal


  2. ChNa 26 Reputation points
    2021-04-16T20:59:01.073+00:00

    soo.. i created 3 VMs.
    Same Subscription, same ResourceGroup
    on 2 of them the Ports are working. the third one does not. HOW???
    EXACTLY the same configuration/setting