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MartinHughes-0097 avatar image
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MartinHughes-0097 asked deherman-MSFT answered

Can the limit of 200 IP ranges on storage account firewalls be increased?


I want to lockdown storage account access and only allow access to selected networks. I need access from our 2 offices, from an Azure VM and also the Power-Bi service. The issue I have is that the Power-Bi service has over 300 IP addresses (some /31 CIDR ranges that need to be split out) and the limit on storage account firewall IP ranges is 200. Can this limit be increased?
Do I need to add the individual Power-Bi addresses if I have selected the exception option to "Allow Azure services on the trusted services list to access this storage account"

azure-storage-accounts
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Hi Martin

I'm not posting this as an answer because I only bring additional ideas / information to the discussion and unfortunately not an answer.

You are indeed correct, there is a limitation of 200 IPs (source) I can't find any documentation that would indicate how to change this hard limit.

[...]Resources of some services, when registered in your subscription, can access your storage account in the same subscription for select operations, such as writing logs or backup. [...] The list can be found here

Small address ranges using "/31" or "/32" prefix sizes are not supported. These ranges should be configured using individual IP address rules. (source). So I can understand your challenge. Can you put a bigger CIDR block? In theory if you allow a /28 it'll work.

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deherman-MSFT answered

@MartinHughes-0097
Unfortunately PowerBi is not currently considered a trusted service so you will need to input the IP addresses to allow access. I do not believe this limit can be increased at this time so using larger CIDR blocks is suggested.

You can always open a request to our support team to review this limit to see if there are any options for you.



Please don’t forget to "Accept the answer" and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

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