Regex Capabilities in Azure WAF via Terraform

Sena Sarici 20

Hello,

I am currently working on deploying Azure Web Application Firewall (WAF) custom rules using Terraform. I understand that I can use regex expressions when creating custom rules directly through the Azure Portal. However, I am unsure if this regex support is available when defining custom rules in Terraform.

Can anyone confirm whether Terraform's Azure WAF module currently supports regex for custom rules? If not, is there any plan to include this feature in future updates?

For example:

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Thank you for your assistance!

Rohith Vinnakota 1,240 Reputation points Microsoft Vendor

2024-10-22T20:17:30.5333333+00:00

Hi Sena Sarici,

Just checking in to see if the below answer provided by Deepanshukatara-6769.If this answers your query, do click Accept Answer and Yes for was this answer helpful. And, if you have any further query do let us know.

Thanks,
Rohith
Rohith Vinnakota 1,240 Reputation points Microsoft Vendor

2024-10-23T20:06:19.0733333+00:00

Hi Sena Sarici,

Just checking in to see if the below answer provided by Deepanshukatara-6769.If this answers your query, do click Accept Answer and Yes for was this answer helpful. And, if you have any further query do let us know.

Thanks, Rohith

1 answer

Deepanshukatara-6769 10,765 Reputation points

2024-10-18T14:12:42.14+00:00

Hello , Welcome to MS Q&A

Yes, Terraforms Azure WAF module supports the use of regular expressions (regex) in custom rules. This capability allows for more advanced matching conditions when creating custom rules for the Web Application Firewall.

For more detailed information, you can refer to the following resources:https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/web_application_firewall_policy

Image

Please let us know if any further questions

Kindly accept answer if it helps

Thanks

Deepanshu
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Sena Sarici 20 Reputation points

2024-10-18T14:24:21.9266667+00:00

Thank you for confirming, Deepanshu.

How can I define the following regex operator in the .tf format in that case? Can you help me with that as well?

This was exported from Azure WAF custom rules.

This is the terraform file I need to fill out the related values but I cannot define it properly.

match_conditions { match_variables { variable_name = "RequestUri" } operator = "Regex" negation_condition = false match_values = [ "", ]

Deepanshukatara-6769 10,765 Reputation points

2024-10-18T16:15:00.6333333+00:00

Hello Sena, I think so need to check with Terraform support on this as I think it seems to be not azure Q&A scopeThanks!
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Regex Capabilities in Azure WAF via Terraform

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