how to fix below rror while creating firewall in azure portal

Question

Hi ,

Im getting below error even though i have the required subnet created. Can someone please help?

Answer 1

Hi,

For Azure Firewall Basic tier Forced Tunneling mode is enabled by default, so your Virtual Network needs to have both AzureFirewallSubnet and AzureFirewallManagementSubnet. In your screenshot your VNet is missing AzureFirewallSubnet.

Try creating AzureFirewallSubnet in your virtual network and then start Create a firewall wizard again.

Please see below articles for more details on Forced Tunneling mode:

https://techcommunity.microsoft.com/t5/azure-network-security-blog/configuring-azure-firewall-in-forced-tunneling-mode/ba-p/3581955

Azure Firewall forced tunneling

https://learn.microsoft.com/en-us/azure/firewall/forced-tunneling

Please click Accept Answer if the above was useful.

Thanks.

-TP