Azure Application Gateway Adfs
In Part 1 of Configuring Azure Application Gateway with AD FS we covered the existing architecture AD FS and the target AD FS architecture. Finally we deployed an Application Gateway with a basic configuration. So lets have a look at the logical configuration of what AD FS with a Application Gateway running a Web Application.
Update : The POC of this article is available on.I have a scenario perfect for a Layer-7 Load Balancer / Reverse Proxy:. Multiple web server clusters to be routed under one URL hierarchy (one domain name). Redirect HTTP traffic to the same URL on HTTPS. Have reverse proxy performing SSL termination (or SSL offloading), i.e. Accepting HTTPS but routing to underlying servers using HTTPOn paper, can do all of those.
Let’s fine out in practice. Azure Application Gateway ConceptsFrom:Application Gateway is a layer-7 load balancer. It provides failover, performance-routing HTTP requests between different servers, whether they are on the cloud or on-premises. Application Gateway provides many Application Delivery Controller (ADC) features including HTTP load balancing, cookie-based session affinity, Secure Sockets Layer (SSL) offload, custom health probes, support for multi-site, and many others.Before we get into the meat of it, there are a Application Gateway uses and we need to understand:.
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. Back-end server pool settings: Every pool has settings like port, protocol, and cookie-based affinity. These settings are tied to a pool and are applied to all servers within the pool. Front-end port: This port is the public port that is opened on the application gateway. Traffic hits this port, and then gets redirected to one of the back-end servers.
Listener: The listener has a front-end port, a protocol (Http or Https, these values are case-sensitive), and the SSL certificate name (if configuring SSL offload). Rule: The rule binds the listener, the back-end server pool and defines which back-end server pool the traffic should be directed to when it hits a particular listener.On top of those, we should probably add probes that are associated to a back-end pool to determine its health. Proof of ConceptAs a proof of concept, we’re going to implement the following:We use Windows Virtual Machine Scale Sets (VMSS) for back-end servers.In a production setup, we would go for exposing the port 443 on the web, but for a POC, this should be sufficient.As of this writing, there are no feature to allow automatic redirection from port 80 to port 443. Usually, for public web site, we want to redirect users to HTTPS.
This could be achieve by having one of the VM scale set implementing the redirection and routing HTTP traffic to it. ARM TemplateWe’ve published the ARM template.First, let’s look at the.The template is split within 4 files:. azuredeploy.json, the master ARM template. It simply references the others and passes parameters around. network.json, responsible for the virtual network and Network Security Groups. app-gateway.json, responsible for the Azure Application Gateway and its public IP. vmss.json, responsible for VM scale set, a public IP and a public load balancer; this template is invoked 3 times with 3 different set of parameters to create the 3 VM scale setsWe’ve configured the VMSS to have public IPs.
It is quite typical to want to connect directly to a back-end servers while testing. We also optionally open the VMSS to RDP traffic; this is controlled by the ARM template’s parameter RDP Rule ( Allow, Deny). Template parametersHere are the following ARM template parameters. This has been really helpful, but I think it is worth noting the “Override Backend Path” feature that is available now which allows the /a/ route to be / when it gets to the server.So for instance, using the Resource Manager, if I want my /a/ route to actually hit the default / route on the server it is pointed to, I would go to my Backend HTTP Settings and fill in the “Override Backend Path” with / then in the Rule I was using set the HTTP Setting for that path to be the HTTP Settings I made the override on. So the functionality is at least there if it is needed. This would make “mydomain.com/a/” still look like “mydomain.com/a/” but route to “mydomain.com” behind the scenes.
Yes definitely! It gets a little confusing because in the GUI Resource manager it is called “Override Backend Path” but in the template you are referencing it is just called “path” as part of the BackendHttpSettings object. It’s located atbackendHttpSettingsCollection:properties:pathHowever, I’d like to point out about it is that when overriding the backend path. I thought I could use it like “mydomain.com/a” without the trailing “/” but currently to get the request to be routed properly you have to have the trailing “/” like “mydomain.com/a/” or it won’t go through.
Application Gateway Doe
Since Citrix XenApp and XenDesktop 7.9 the Federated Authentication Service (FAS) is available. Citrix FAS allows a user to login via SAML instead of basic LDAP. This can be any SAML IdP like Google, Okta, Imprivata or Windows Azure Active Directory. In this blogpost i’ll show you how to configure Azure Active Directory for Citrix FAS.Citrix provided a detailed guide for the initial Citrix FAS configuration: also Carl Stalhood wrote a blogpost on how to integratate Citrix FAS with Microsoft AD FS: Configure Azure ADAfter that we have configured Citrix FAS internally we can now configure Azure AD. Sign-in to the Azure portal (i’ll used the classic management page ) Then go to your Active Directory within Azure and open the required Active Directory.Create Azure AD ApplicationNext, go to applications and click Add. Select the option “Add an application from the galary”:Choose Custom Application and give it a name and click next:Now the application has been created and we can configure the details:Configure SSONow we have to configure the defails for this application, so click “Configure single sign-on”.
The first question we will get is how we want to authentication for this application. Select Microsoft Azure AD Single Sign-On and click next.The next page will bring you the important information. Make sure to download the certificate in Base 64 format, you’ll need this certificate later!
Azure Application Gateway Adfs Wap
Also make note of the singe sign-on server url. Select he confirmation checkbox and click next.When the configuration is finished you should get the following confirmation screen (if it fails try to repeat this proces via Google Chrome!)Assign UsersNext we have to assign the users that are allowed to use this Azure AD Application. Choose the Assign Accounts option:Select one ore more accounts that you want to give access to this application and select assign:This completes the Azure AD configuration for Citrix FAS. Now we need to configure NetScaler Gateway to use Azure AD as the IdP for authentication.
Citrix NetScalerNow that we have configured Azure AD we start with configuring NetScaler to use Azure AD as SAML IdP.Add CertificateFirst we need to add the certificate that we’ve downloaded during the Azure AD application creation.