Is there a way that we can route outbound traffic going out from an ILB ASE to an static internal IP?
I understand that App Service Plans get assigned an IP dynamically from the subnet the ASE belongs to, but we have a need to make sure traffic comes to our on-premise data center from a static IP.
As for as I know, apps running in an App Service environment get static, dedicated IP addresses both for inbound and outbound connections. See here. As you said, we can't beforehand which IP address will be assigned app instance to make the outbound connection if there are scaled-out instances. Even now I could not find any official doc to define this. It's welcome to give feedback here.
Besides, if you want to route your ASE outbound traffic somewhere instead of directly routing to the internet, you can configure your App Service Environment with forced tunneling from this doc.
Related
In the documentation for Azure ContainerApps Ports and IP Addresses section it indicates that the
Outbound public IP
Used as the "from" IP for outbound connections that leave the virtual network. These
connections aren't routed down a VPN. Using a NAT gateway or other proxy for outbound
traffic from a Container App environment isn't supported. Outbound IPs aren't guaranteed
and may change over time.
The inbound IP for a ContainerApps Environment is fixed. Azure Container Instances (not ContainerApps) on the other hand seem to have documented capability to configure a static outbound IP via NAT Gateway.
Is there a way to configure a static outbound IP for Azure ContainerApps as well?
If not, which alternate deployment models for a long-running background service are recommended? The requirement is that an external service can count on a fixed outbound IP (or very small range, not the entire DataCenter IP ranges) for whitelisting.
** EDIT - It seems that NAT on VNet is not yet supported on ACA - https://github.com/microsoft/azure-container-apps/issues/522
way to configure a static outbound IP for Azure ContainerApps as well?
No, we can't configure outbound public IP via container apps; that information is there in the official documentation documentation itself.
try this out, Create outbound application rule on the firewall
using below command
az network firewall application-rule create
It will create an outbound rule on the firewall. This rule allows access from the subnet to Azure Container Instances.
HTTP access to the site will configure through egress IP address from Azure Container Instances.
i have found one blog refer this
I am running a Linux container as a web app in an internal ASE.
The ASE is deployed to a Vnet (secondary Vnet) which is peered to a another Vnet(Primary vnet) where an Azure firewall exists.
1.I have Enable service endpoints to SQL, Storage, and Event Hub on your ASE subnet.
2.From the Azure Firewall UI > Rules > Application rule collection, Set App Service Environment FQDN Tag and the Windows Update Tag.
3.From the Azure Firewall UI > Rules > Network rule collection, Set the ports to 123.Create another rule the same way to port 12000 to help triage any system issues.
4.Create a route table with the management addresses from App Service Environment management addresses with a next hop of Internet, set 0.0.0.0/0 directed to the network appliance ( Firewall internal IP address)
5.Create Application rules to allow HTTP/HTTPS traffic (Note: address is the IP of the ILB of the Internal ASE, since I cant find an IP for the web app itself)
I don't seem to be able to reach the web app. Any guidance will be appreciated. is the problem that I created an Internal ASE?
I am trying to isolate the ISE and control external access to it via a firewall.
MSDocs I referenced :https://learn.microsoft.com/en-us/azure/app-service/environment/firewall-integration
Yes, I think it's the problem with internal ASE. Also, the referring document is intended to lock down all egress from the ASE VNet. Inbound management traffic for an ASE can not be sent through a firewall device.
There are a number of inbound dependencies that an ASE has. The
inbound management traffic cannot be sent through a firewall device.
The source addresses for this traffic are known and are published in
the App Service Environment management addresses document. You can
create Network Security Group rules with that information to secure
inbound traffic.
In addition, since it's an internal ASE, it is deployed in your VNet with ILB. You can not directly access its backend web app over the Internet, you need at least a public-facing Ip address (external VIP )or other public-facing services(Public Azure application gateway) in front of it.
It will like this,
So I have setup a web app, virtual network, application gateway using this link. I also added a virtual network gateway to the vnet so that I can integrate my web app to the vnet.
Now correct me if I am wrong but isn't the purpose of integrating your web app with virtual network to make it more secure? if so then I should only be able to access my web app through the application gateway public IP correct?
Currently when I hit the the myapp.azurewebsites.net, I get to the application.
Do I have to do something extra here?
You are mixing several different things here.
Application gateway is just a proxy (more or less). It has no control over whatever server it is routing traffic to. It cannot magically make it not accept traffic not from application gateway. That is for the server to decide (in your case you need to use web.config as far as I remember to restrict incoming IP addresses only to the IP addresses of the application gateway). So adding application gateway to the mix doesnt make it more or less secure.
Vnet integration works only one way, FROM the webapp inside the Vnet. Things inside the vnet cannot talk back to the webapp using "internal" vnet traffic, they have to use external IP address. So this wont really help you.
If you want your webapp to be available only inside the VNet your best bet is App Service Environment, but its a lot more expensive :(
I have a website on Azure App service and I've asked a service provider to open up for my outbound IP addresses. How can I make sure that those IPs won't change?
If there is a new IP assigned to my app service, all calls from that IP will be blocked by the service provider.
The outbound IP addresses are per stamp/scale unit that the apps are on. It is not specific to a certain webspace or resource group.
You can find the stamp/scale unit in the Properties blade under the FTP Hostname endpoint. It should list out something like "waws-prod--". All of the apps in the same stamp/scale unit number in that region will have the same outbound IP addresses, as they are per stamp/scale unit.
The list of outbound IP addresses is not completely static but normally it does not change. Check out the reasons for the IP change in the thread outlined by Ruslan.
If you need both incoming and outgoing to be static, you will need an App Service Environment. This will give you dedicated IP addresses.
For more information see: https://learn.microsoft.com/en-us/azure/app-service/environment/app-service-app-service-environment-intro and https://msdn.microsoft.com/en-us/magazine/mt793270.aspx.
I just want to know if its possible to reference an internal expressroute onprem host for the back-end pool configuration of an application gateway.
The documentation is a bit vague on the subject.
Back-end server pool: The list of IP addresses of the back-end servers. The IP addresses listed should either belong to the virtual network subnet or should be a public IP/VIP. FQDN can also be used.
Thanks
Alex
Based on this, I believe it is possible to reference any IP address.
The Application Gateway routes the HTTP traffic based on its
configuration whether it's a virtual machine, cloud service, web app,
or an external IP address.