856 questions with Azure Firewall tags

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1 answer

The Update firewall configurations for new Intune network service endpoints will not run

tried to run Azure Front Door Connectivity Diagnostics Tool it would not, ran as a user and admin downloaded software PSTools.zip still didn't work. I am losing time and patience with this.

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-04-03T20:30:11.2366667+00:00
Trish Wood 0 Reputation points
edited a comment 2026-04-07T18:05:22.87+00:00
Vallepu Venkateswarlu 6,905 Reputation points Microsoft External Staff Moderator
2 answers One of the answers was accepted by the question author.

Getting NXDOMAIN to database.windows.net through Azure Firewall DNS Proxy.

Hello everyone. As of last night we started getting reports of DNS no longer correctly resolving against *.database.windows.net The setup was working for over 3 months thus far. This is a cloud-only environment. 2 tenants connected through Azure…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-04-03T15:08:45.81+00:00
Kjell Bulcke 20 Reputation points
answered 2026-04-07T15:43:40.0033333+00:00
Ganesh Patapati 11,760 Reputation points Microsoft External Staff Moderator
0 answers

Unable to insert HTTP header via an application rule configure in Azure Firewall policy

Following this link, it's possible to insert a header: https://learn.microsoft.com/en-us/rest/api/firewall/firewall-policy-rule-collection-groups/create-or-update?view=rest-firewall-2025-05-01&tabs=HTTP Unfortunately, it does not work in my…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-17T17:16:48.4133333+00:00
Beatrice DUPAS 0 Reputation points
commented 2026-04-06T12:33:32.3933333+00:00
Shree Hima Bindu Maganti 6,955 Reputation points Microsoft External Staff Moderator
0 answers

How to configure AZFWFlowTrace logs on Azure Firewall (Basic SKU) to debug Asymmetric routing

Hi, I have created a azure firewall on a VNET and i am trying to debug an issue related to asymmetric routing, The scenario is a P2SVPN trying to communicate with a SQL Server (via private endpoint), the P2SVPN is in a hub vnet and the SQL Server is in…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-01-27T14:51:15.3933333+00:00
Charith W 0 Reputation points
commented 2026-04-03T09:12:24.2766667+00:00
Ravi Varma Mudduluru 9,285 Reputation points Microsoft External Staff Moderator
2 answers

Unexpected Network Traffic Reaching VM Despite NSG Configuration in Azure

We are experiencing an issue where network traffic is reaching our Virtual Machine, even though our Network Security Group (NSG) is configured to block this traffic. For example, traffic on port 80 is being logged by UFW on the VM, despite the NSG rules…

Azure Traffic Manager
Azure Traffic Manager

An Azure service that is used to route incoming network traffic for high performance and availability.

142 questions
Azure Virtual Network
Azure Virtual Network

An Azure networking service that is used to provision private networks and optionally to connect to on-premises datacenters.

3,082 questions
Microsoft Security | Microsoft Defender | Microsoft Defender for Cloud
Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2025-02-12T20:30:27.2933333+00:00
nma 5 Reputation points
commented 2026-04-01T03:51:43.7333333+00:00
rajesh kumar 25 Reputation points
1 answer One of the answers was accepted by the question author.

Pass client source ip address through firewall

I currently have some VM's where I have some public web applications. Because I use Azure firewall I can only see the firewall ip as the referring ip, but in order to protect against certain attacks and also for other purposes I need to know the actual…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-23T17:49:35.13+00:00
Dee Jay Skinner 20 Reputation points
accepted 2026-03-27T16:39:19.0666667+00:00
Dee Jay Skinner 20 Reputation points
2 answers One of the answers was accepted by the question author.

Trying to Access hosted Application on my Virtual Machine and getting a "Too long to Respond" error

I'm trying to access a hosted application on my Virtual Machine, through a web browser (Edge), and I am getting a "Too Long to Respond" error. I think I have the correct ports open, and I tried to setup a firewall route, but I'm still having…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-17T00:29:40.79+00:00
PM Pro Consulting LLC 40 Reputation points
edited an answer 2026-03-26T19:07:05.21+00:00
Ganesh Patapati 11,760 Reputation points Microsoft External Staff Moderator
3 answers

Unable to add/update Azure firewall policy application rule with a valid FQDN

I am trying to add a application rule into Azure firewall policy to allow a valid FQDN but it's failing the validation. PII is a valid FQDN belonging to University of Cambridge. I would like to do it only through Azure portal as i don't have a Test…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-10T10:26:07.5566667+00:00
Mr K 25 Reputation points
edited an answer 2026-03-24T08:41:06.07+00:00
Praveen Bandaru 11,305 Reputation points Microsoft External Staff Moderator
2 answers

Merkai Walled Garden wildcards for the PC Entra

Hi, I'm having a problem related to Meraki walled Garden to add the wildcards. We have the PC Full hybrid and trying to connect to new user to the WiFi guest so they can changer there generic password. The Wifi guest isn't letting them to connect to…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-02T08:58:00.1133333+00:00
Hassan Afzal 0 Reputation points
answered 2026-03-20T02:09:01.51+00:00
Shubham Sharma 12,200 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

Unable to Access Web Application Despite IP Whitelisting in Azure WAF Policy

We are currently facing an issue with our Azure Front Door configuration. We have whitelisted our public IP address in the Azure WAF policy associated with Azure Front Door. However, we are still unable to access the web application through the Front…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-04T14:54:04.27+00:00
Shubham Sanap 120 Reputation points
accepted 2026-03-16T14:11:03.62+00:00
Shubham Sanap 120 Reputation points
2 answers

Azure VM configured with a fixed public IP address , no longer works

Hello, I have an Azure VM that setup by our engineer on a vlan. The network had an Azure firewall. The particual machine was setup with a set public ip address so we could setup dns to allow inbound sftp etc... Outbound traffic was received by public…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-12T05:05:09.3433333+00:00
Lou Feliz 0 Reputation points
answered 2026-03-12T10:36:37.4966667+00:00
Vallepu Venkateswarlu 6,905 Reputation points Microsoft External Staff Moderator
1 answer

Outbound email not sending from cPanel/WHM server hosted on Azure

Hello Azure Support, I am experiencing an issue with outbound email from my server hosted on Azure. My setup is: Domain DNS is managed at Hostinger Website and email are hosted on a cPanel/WHM server running in Azure Problem: My email accounts are…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-09T11:19:16.72+00:00
Balasubramanian Rajendran 0 Reputation points
answered 2026-03-09T16:13:10.94+00:00
Thanmayi Godithi 8,310 Reputation points Microsoft External Staff Moderator
2 answers

Open port 25 (SMTP)

Dear Sir/Madam, I would like to request that port 25 (SMTP) be opened for sending emails on a virtual machine hosted on Microsoft Azure. We recently deployed a SmarterTools email server on a VM in Azure. The internal configuration of the operating system…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-03-03T13:14:41.2766667+00:00
R Cinezi 0 Reputation points
answered 2026-03-03T13:30:10.1533333+00:00
Thanmayi Godithi 8,310 Reputation points Microsoft External Staff Moderator
1 answer One of the answers was accepted by the question author.

FTP Client "Connection Timeout"

hello, I have a public facing FTP resource I am trying to setup. I have configured this vm for FTP access, configured the vm firewall rules correctly, setup inbound rules correctly on azure. using passive ftp Yet using filezilla as test, logs in…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-02-19T16:10:28.1266667+00:00
pierre shiraziefard 40 Reputation points
edited an answer 2026-02-27T20:09:54.3+00:00
Vallepu Venkateswarlu 6,905 Reputation points Microsoft External Staff Moderator
0 answers

Azure Firewall I see the

Azure Firewall reports the following problems: Failed to resolve FQDN microsoftmetrics.com. Error lookup microsoftmetrics.com on 127.0.0.53:53: no such host; DNS resolution returned no IPs. It comes from AzureFirewallSubnet subnet. So seems that Azure…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2024-02-26T10:49:53.0733333+00:00
Mariusz Ferdyn 5 Reputation points
commented 2026-02-25T20:14:28.4466667+00:00
Olivier Castonguay 0 Reputation points
1 answer One of the answers was accepted by the question author.

Azure Virtual Hub - Security Configuration

I would like to clarify the purpose of the “Private traffic prefixes” option. My understanding is that this setting is different from the private SNAT ranges used for SNAT configuration. Could you please confirm if this is correct? I attempted to…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-02-22T10:26:53.7+00:00
Peter Stieber 65 Reputation points
accepted 2026-02-22T12:44:04.1933333+00:00
Peter Stieber 65 Reputation points
3 answers

How to preserve Client Source IP with Azure Firewall, Load Balancer, and VMSS architecture?

Background: I have a hub-and-spoke architecture where I am using Azure Firewall and an Azure Load Balancer to route traffic to a Virtual Machine Scale Set (VMSS). The VMSS hosts multiple web projects. The Issue: When a user accesses a project via its…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-02-05T09:48:05.3933333+00:00
Subhash Chand 0 Reputation points
answered 2026-02-21T01:53:04.1466667+00:00
QUAN 0 Reputation points
3 answers One of the answers was accepted by the question author.

How to locate a hidden firewall?

I received a large bill from an Azure Firewall recently. I am confused because while this has happened before, I deleted the firewall last time to ensure it doesn't happen again, and yet I have an even larger bill. I have tried to look for this…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-02-10T23:23:03.5733333+00:00
Luke Young 20 Reputation points
recommended 2026-02-18T18:50:09.6766667+00:00
Alex Burlachenko 19,695 Reputation points
2 answers

Want to route on-prem traffic to internet through azure firewall

We want to route on-premises traffic to the internet through Azure Firewall. For that, we have deployed an ExpressRoute connection between on-premises and Azure. Now we are trying to route the traffic from the GatewaySubnet to the firewall by defining a…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2025-12-22T05:59:43.41+00:00
GAWAI, SRIKANT 0 Reputation points
commented 2026-02-05T08:33:19.9466667+00:00
Thanmayi Godithi 8,310 Reputation points Microsoft External Staff Moderator
1 answer

Multiple firewall deployments (Premium and Standard) failing in Central US

in the Azure Central Region, I am on my third or fourth try trying to get an AZ firewall built since yesterday. It takes 2 plus hours before it fails. I was using premium but then switched to standard, same results. I tried creating another firewall in…

Azure Firewall
Azure Firewall

An Azure network security service that is used to protect Azure Virtual Network resources.

856 questions
asked 2026-01-30T20:48:50.2533333+00:00
Jay Cobden 20 Reputation points
answered 2026-02-02T15:54:01.9533333+00:00
Jay Cobden 20 Reputation points