IIS Server websites not working after setup Azure firewall policy.

Jay 20 Reputation points
2024-01-26T13:27:59.8366667+00:00

Hi Guys,
Thanks in advance for your help.
I have issue with IIS website access after setup azure firewall and policy,.
Please help me. I am new for Azure netwotking,

Internet Information Services
Azure Firewall
Azure Firewall
An Azure network security service that is used to protect Azure Virtual Network resources.
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Azure
Azure
A cloud computing platform and infrastructure for building, deploying and managing applications and services through a worldwide network of Microsoft-managed datacenters.
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  1. ChaitanyaNaykodi-MSFT 23,031 Reputation points Microsoft Employee
    2024-01-27T02:24:14.1666667+00:00

    @Jay

    Thank you for reaching out.

    I understand you are facing issues with IIS website deployed behind an Azure Firewall.

    In troubleshoot connectivity issue with Azure Firewall. It is recommended to enable structured diagnostic logging for the Azure Firewall as described here. Azure Firewall's structured logs provide a more detailed view of firewall events. They include information such as source and destination IP addresses, protocols, port numbers, and action taken by the firewall. They also include more metadata, such as the time of the event and the name of the Azure Firewall instance.

    You can refer to this documentation for queries .

    You can query the

    • Network rule log - Contains all Network Rule log data. Each match between data plane and network rule creates a log entry with the data plane packet and the matched rule's attributes.
    • Application rule log - Contains all Application rule log data. Each match between data plane and Application rule creates a log entry with the data plane packet and the matched rule's attributes.

    This will give you more information on if any specific Network Rule or Application Rule blocking the connectivity.

    Kindly let us know if the above helps or you need further assistance on this issue.

    ---Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

    1 person found this answer helpful.

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  1. SaravananGanesan-3177 1,665 Reputation points
    2024-01-28T15:52:48.9466667+00:00

    Hi Jay, Experiencing issues with IIS website access post Azure Firewall and policy setup? First, confirm your firewall rules allow necessary traffic. Verify NSGs, route tables, and application rules. Check if backend pool settings align with IIS configurations. Review diagnostic logs for insights. Use Azure Network Watcher for troubleshooting. Consult Azure documentation for specifics. Engage Azure forums or support for tailored assistance. Familiarize yourself with Azure networking concepts to navigate and troubleshoot effectively.

    Regards, Saravanan Ganesan.

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