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Number of DNAT rule on Azure firewall

Chavan, Suryakant 41 Reputation points
2022-12-29T10:14:05.92+00:00

Is there any limit on UDP DNAT rule? We have requirement to create around ten thousand UDP DNAT rule for SIP.

I did not find microsoft link referring to number of supported DNAT rule, However below link referring to limit of 500.
https://github.com/MicrosoftDocs/azure-docs/blob/main/includes/firewall-limits.md

Is anyone come across such situation and identify supported DNAT rule for standard Azure firewall?

Azure Firewall
Azure Firewall
An Azure network security service that is used to protect Azure Virtual Network resources.
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  1. KapilAnanth-MSFT 49,611 Reputation points Microsoft Employee Moderator
    2022-12-29T10:47:32.443+00:00

    Hi @Chavan, Suryakant ,

    Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
    I understand that you would like to know the maximum DNAT rules that can be configured standard Azure Firewall.

    Refer: Azure Firewall limits
    274752-image.png

    i.,e you can have a maximum of 250 unique destinations (IP + Port + Protocol combination)

    Please let me know if you require more clarity on this, I would be happy to assist you.

    Thanks,
    Kapil

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    1 person found this answer helpful.

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