We are trying to set up office 365 to send email from our azure account.
Are our Outbound IPs shared with other azure users or not?
https://learn.microsoft.com/en-us/azure/app-service/overview-inbound-outbound-ips
To find out if the outbound IPs that are shown in the properties area of my portal are shared with other users or do I have to buy a dedicated static IP address to make sure no one else is using them.
It seems that you refer to the outbound IP of web service in Azure. Azure App Service is a multi-tenant service, except for App Service Environments. Apps that are not in an App Service environment (not in the Isolated tier) share network infrastructure with other apps. So the IP address lists used for the web app are possible to share with others.
Unless you use an Application Service Environment (ASE) you cannot guarantee that the inbound or outbound IPs will change, However, you could control when the IP address will change. The set of outbound IP addresses for your app changes when you scale your app between the lower tiers (Basic, Standard, and Premium) and the Premium V2 tier. For more references, you could see steve's answer here.
Related
Right now we have multiple resources like storage accounts and key vaults where the team is using the firewall setting within the networking tab on the individual services. This means when their ip changes after a disconnect/connect to the company VPN they have to go in to each service and add their new IP address.
Not being well versed in Azure networking possibilities, what are some of the options we have to allow a group of incoming IP addresses to be able to access all these services without having to individually touch each service to add their new ip address?
All services are also on the same virtual network.
Thank You
I used to work on Azure Cloud services as a DevOps in the past.
There should be multiple ways to control incoming network traffic to your landing zone or azure resources. But you should consider your requirements meet the solution.
Here are few you could take a look at which I used:
Virtual network service endpoints
Azure Firewall
Network Security Groups
ExpressRoute
I have 2 app service plans in the same Azure region running 1 app each - web frontend on one, API on the other.
I want to use access restrictions on the API to only allow access from the front end app.
I set access restriction rules using all the outgoing IP addresses associated with the frontend app (I note that these are exactly the same as the outgoing IP addresses on the API app as well) however when the frontend app tries to contact the API I get an error:
403 forbidden 'The web app you have attempted to reach has blocked your access.'
The 2 apps can communicate as normal when the access restrictions are removed.
I turned on diagnostic settings and ran a query on IP blocking by the app.
Turns out that the FE app is using an IPv6 address instead of the v4 addresses listed in the app properties.
This is because the app has a vnet integration set up connecting to a Subnet delegated to Webservice/serverfarm.
Azure does not make it obvious that using delegated subnets forces an integrated app to use IPv6 and there does not appear to be a way to discover what v6 addresses may be in use. MS forum response suggests any firewall rule for a web app attached to a delegated subnet should allow ALL IPv6 addresses (!!) as a way of working around the problem.
https://learn.microsoft.com/en-us/answers/questions/493483/why-is-my-azure-web-app-showing-an-ipv6-outbound-i.html
You can control the IP address of outbound traffic from your FE web app by using regional VNet integration together with a virtual network NAT gateway to direct traffic through a static public IP address. Regional VNet integration is available on Standard, Premium, PremiumV2 and PremiumV3 App Service plans. To learn more about this setup, see NAT gateway integration.
Once you FE web app has a static IP you can use that on the API web app restriction in an ALLOW rule.
If your requirement fits, you may also leverage Service Endpoints.
With service endpoints,to ensure inbound traffic to your API app comes only from the subnet used by your front-end web app.
With this route, you need to use VNet Integration with your front end app and service endpoints with your API app. Set service endpoints on the integration subnet used by your Front End application. This solution is fast to set up and easy as well.
-This feature works together with IP access restrictions. Service endpoints aren't compatible with remote debugging. There are some considerations you need to make, you may take a look at them here and also other combination of networking features available on App Service and related scenarios.
As a side note:
-IP-based access restriction rules only handle virtual network address ranges when your app is in an App Service Environment. If your app is in the multitenant service, you need to use service endpoints to restrict traffic to select subnets in your virtual network.
-On App Service, you could have those two separate apps in the same App Service Plan (ASP), since you pay only for ASP, saving costs.
So, you can continue to add apps to an existing plan as long as the plan has enough resources to handle the load. The apps in the same App Service plan all share the same compute resource.
I've run the suggested commands on the Kudu console to check for an outbound IP and nothing pops up.
Evidence :(
Under properties within the App Services menu, no outbound IP is listed either.
Evidence 2
I did not setup this Azure Stack Account or this App Services Web App. I think it might have been set up in some "isolated" version. Is it possible to change some setting somewhere to allow an outbound IP? Should I just make a new Web App within the Service Plan? Should I make a new Service Plan?
I think it's impossible to change some setting somewhere to allow an outbound IP. For more details, pls read the offical document about Inbound and outbound IP addresses in Azure App Service.
The set of outbound IP addresses for your app changes when you scale your app between the lower tiers (Basic, Standard, and Premium) and the Premium V2 tier.
I have an azure website that I can access by
myname.azurewebsites.net
In Azure dashboard, the IP is 104.214.237.135
When I try to access my website by IP I have a 404 error
I don't understand. My plan App Service is S1
Regards
Azure App Service is a multi-tenant service, except for App Service Environments. Apps that are not in an App Service environment (not in the Isolated tier) share network infrastructure with other apps. As a result, the inbound and outbound IP addresses of an app can be different, and can even change in certain situations.
App Service Environments use dedicated network infrastructures, so apps running in an App Service environment get static, dedicated IP addresses both for inbound and outbound connections.
Azure AppService IP addresses are shared between tenants and not guaranteed to be static. Your app is bound to the hostname, not the IP address. Unless you are using App Service Environment, you cannot use a static / dedicated IP address with Azure AppServices. You can add additional custom hostnames to your app.
Currently creating websites in Azure and was wondering if there was a way to create reserved static outbound ip addresses for those websites. I am not creating and loading the websites via virtual machines or cloud services, just directly through the Azure websites option in the Azure portal. I read that by default, a virtual ip per region for your subscription is supplied but We don't want to provide this ip address to whitelist. Can anyone please help point me in the right direction? Thanks.
This is currently not possible with Microsoft Azure.
The outbound IP will be one of the IPs in the datacenter. The list of IPs in the datacenter can be found here.
The good news is that Microsoft are planning to make this feature available soon.
Now its possible!!!
you can use App Service Environment(ASE)
App Service supports dedicated outbound IP addresses for apps deployed using the App Service Environment (ASE) feature.
For the forseeable future, apps running in the public multi-tenant service will continue to use outbound addresses from a shared address pool.
from Dedicate outbound ip
ASE is very costly :)