Can anyone suggest some solution for this scenario?:
I have two resources deployed in a VNet: Application Gateway and a VM behind application gateway. (Application gateways in subnet1 and VM in subnet2) There's is no public ip associated with Application Gateway (internal app gateway with only private ip). I have automation scripts in storage account in another tenant and I need to be able to download those inside vm using azure cli. With the given architecture, I want to be able to download the scripts in the vm from storage account. Currently, if I run "az login" from VM, nothing happens. I found some help on Azure documentation :https://learn.microsoft.com/en-us/azure/application-gateway/configuration-overview#allow-application-gateway-access-to-a-few-source-ips but it's not helpful.
I have also attached network security group with allows VnetInbound for VM. In while architecture, I cannot use any public ip because of customer requirements and they do not want any connectivity to internet.
Any suggestions?
Thanks in advance!
Since Azure VM does not attach a public IP, the storage account does not directly communicate with your Azure VM over the Internet.
In this scenario, I would like to provide two suggestions:
The one is to use virtual network service endpoints, which allow you to secure Azure Storage accounts to your virtual networks, fully removing public internet access to these resources. You could create service endpoints for Microsoft.Storage in that VM subnet. You VM instance will access the storage account over the Azure backbone network but it has some limitations as below:
The virtual network where the endpoint is configured can be in the
same or different subscription than the Azure service resource. For
more information on permissions required for setting up endpoints and
securing Azure services, see Provisioning.
Virtual networks and Azure service resources can be in the same or
different subscriptions. If the virtual network and Azure service
resources are in different subscriptions, the resources must be under
the same Active Directory (AD) tenant.
Another suggestion is to use private endpoints for Azure Storage. You could create Private endpoint connections for the storage account in a VNet, then peer this VNet with the VNet where your Azure VM create.
For more references, you could get more details and steps on these blogs--https://stefanstranger.github.io/2019/11/03/UsingAzurePrivateLinkForStorageAccounts/
and
https://kvaes.wordpress.com/2019/03/10/hardening-your-azure-storage-account-by-using-service-endpoints/
Related
I am trying to connect from a client in vnet A to a Synapse Workspace and storage account in vnet b using private endpoints.
All traffic between the two vnets is routed via a third party firewall.
The firewall allows all traffic:
If I try to open Synapse Studio I receive an error 'Failed to load'. When I run the the Powershell Script provided by Microsoft to test the connection, I receive a TrustFailure on the 'dev' and 'sqlondemand' private endpoints:
Does someone know what causes this problem and how I can fix it?
I tried:
Allowing any applications on the firewall rules
Allowing Azure services and resources to access workspace on network settings of Synapse Workspace
tweaking network settings of the workspace instance
Thank you GregGalloway for your guidance in the comments; the DNS records were wrongly configured. The 'dev' FQDN resolved to the 'sqlondemand' private ip and vice versa. After correcting this, the errors disappeared.
I have an Azure web app which talks to the Azure VMs via Azure Load balancer. The VMs have NSG rules setup. The VMs are also being used by other servers/web apps. How do I prevent someone impersonating the IP and trying to get access to the VMs? Or how do I add another layer of security other than whitelisting the client IPs in the NSG of the VMs?
To secure Azure VMs, please try the following workarounds:
Make use of Azure Bastion, to securely connect to virtual machines from Azure Portal over TLS. If you are using Azure Bastion there is no need to create public IP on the Azure VM.
Try creating DDoS protection plan and enable it to your virtual network. DDoS protection plan is a paid service that offers enhanced DDoS mitigation capabilities.
Make use of Azure Firewall which filters IPs by denying traffic from known malicious IP addresses.
Enable all the above options in your virtual network like below:
Otherwise,
Make use of JIT (just-in-time) VM access that allows only legitimate users to access the VM when necessary by reducing the attack.
Try using VPN gateways which send encrypted traffic between Azure virtual networks. Please note that each virtual network can have only one VPN gateway.
For more information, please refer below links:
How to secure a Windows Server virtual machine in Azure (microsoft.com).
Best practices for defending Azure Virtual Machines - Microsoft Security Blog.
I have a Google Enterprise Subscription ( Redis Cloud/Fixed Plan/GCP/us-east1/Standard/100MB)
I can connect to the database from my local DEVELOPMENT environment.
BUT I CANNOT connect when I publish the app to the Google Cloud Platform (Cloud Run)
My Cloud Run app is in the same region as the Redis Instance (east-1)
The connection between your GCP project and the Redis instance is achieved through a VPC network peering as specified on the docs. Check all the restrictions and considerations for VPC network peering in GCP here. So I believe that if you make sure to route all traffic from your service through a Serverless VPC connector that is paired with the VPC network peering associated with your Redis instance could do the trick.
Anyhow, assigning your Cloud Run service a static outboud IP address by following this section of the docs should also guarantee that the connection is achieved. Notice that you'll basically need to configure the Cloud Run service's VPC egress to route all outbound traffic through a VPC network (using a Serveless VPC Access connector) that has a Cloud NAT gateway configured with the static IP address. Making sure that this IP address is cleared under the Source IP ACL related to your Redis Enterprise instance should guarantee the connection.
Finally, if you face too much difficulties achieving such a connection you could try to host your Redis instance in Cloud Memorystore and follow this section of the docs (notice that you'll basically need to once again create a VPC connector).
I have a Web App (Azure App Service) and I have an Azure SQL Database that this Web App talks to. I have two questions regarding communication between the two.
When connecting from the Web App to the Database (using the connection string), does the communication go out to the internet and then back into Azure or does Azure know to keep the traffic locally in Azure?
I have been looking into V-Net Service Endpoints as a possible way to improve speed of communication between the two. It is said that when connecting from a VM on V-Net with Service Endpoints enabled to a SQL Database, that Azure knows to keep the traffic internal to the Azure network and not go out to the internet, is this the same for Azure App Services?
Is it possible to keep traffic between an App Service and SQL Database internal to Azure? If so, how do I go about doing this? Any guidance on this is greatly appreciated.
It knows to keep it local on the "Azure backbone" (as per Azure doco). It doesn't go out to the public internet
Yes
Yes. It is already internal to the "Azure Backbone"
Having said that.... networks are really complicated.
As I understand it the main benefit of V-Net is that you can define your own network and add things to it like firewalls, security groups, subnets, peering between networks. Also it helps when setting up a hybrid network - i.e. connecting Azure resources to an on-premises network. When you can set up the same kind of structures as on premise, it's easier to 'transparently' make it part of the on-premises network. Lastly (rereading the doco), you can remove any incoming public IP firewall rules. These are "Azure backbone" IP addresses but they are also "public internet" addresses
There may be a performance improvement if the App Service and Azure SQL are on the same V-Net.
Azure SQL service endpoints are a bit mysterious. They "connect" to the VNET but you still need to connect to a public address. They don't actually take a up a local IP adress.
Depending on what you are really doing, you might want to look into private endpoint, which actually assigns a private IP to your Azure SQL.
Yes, communication between Azure App Service and Azure SQL Database is "local" within the Azure Virtual Network and does not go out to the public internet.
We have a SQL Azure database and enabled VNET service endpoint. The service endpoint is listed in our VNET and the Azure SQL lists our VNET. According to documentation found here, connections applications inside our VNET should use the Azure backbone and not travel through the public internet.
There was another stack overflow article asking a similar question but I still didn't see an answer (maybe I missed it). That article is here
This is great, but I don't see how to build the connection string to utilize this internal network path since the only name available is the public DNS name (which we can still use with SSMS to manage the server from our on-premise location).
Is Azure smart enough to know that this public DNS name is routed differently when used inside the VNET versus when its used from our on-premise site?
Is Azure smart enough to know that this public DNS name is routed differently when used inside the VNET versus when its used from our on-premise site?
Yes. And that doesn't even require a VNET service endpoint. Connections within Azure, even across Regions never leave Microsoft private networks.
A Virtual Network Service Endpoint is mostly just a firewall rule on your SQL Instance, so you can cut off all public IP access if you want.