closed ports 443 and 80 on all my VM's

Question

my firewall is open for all inbound ports in order to troubleshoot the issue but I am still having that my only two ports is closed 443 and 80 only but all other ports are open in all my VM's .

I have a peering network between two VNET is this where came the problem any help?

thanks.

Answer 1

Hi Tom,

Greetings,

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

Ports 80 (HTTP) and 443 (HTTPS) being closed on your Azure VMs, despite having an open firewall, can be due to several factors:

• Check Inbound Security Rules:
  • Navigate to the NSG associated with your VMs.
  • Ensure there are rules allowing inbound traffic on ports 80 and 443.
  • If there are any Deny rules that might override the Allow rules, adjust them accordingly.

Since you mentioned having a peering network between two VNETs, ensure that the peering configuration allows traffic between the VNETs.

• Check Peering Settings:
  • Verify that the peering settings allow forwarded traffic.
  • Ensure that the NSGs on both sides of the peering allow traffic on the required ports.

Troubleshooting connectivity problems between Azure VMs:

Refer: https://learn.microsoft.com/en-us/azure/virtual-network/virtual-network-troubleshoot-connectivity-problem-between-vms?source=recommendations

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Hope this clarifies, please let me know whether your issue resolved or not, if not please share me what error you are getting in terms of screenshot.

Regards,

Ganesh