Restrict azure wildcard domain - azure-web-app-service

We do have multitenant app hosted on azure and we considered using wild card domains as there is restriction of number of subdomains an app service can contain(as of now it is 500) and I was able to add wildcard domains and attach to out App service.
Now Our concern is , it allows any domains which ends with say '.oursize.com', at least the landing page of website.
Suppose, we asked customer A to use as.oursite.com, if they misspell and use ap.oursite.com, still they will be able to access this and try to login and end up having error.
So, Is there any way, we can add restriction for subdomain? at App service level to allow only some domains or at Traffic manager level or load balancer level?

If you have enabled TLS/SSL with your Azure Web App then maybe by using a certificate with Subject Alternate Name you can restrict a customer from entering a wrong domain name. You can go through this documentation for additional details.

Related

SSL certificate for a multitenant web app

I'm developing a multitenant web app hosted in azure. Tenants point their domain to my app and this is how I distinguish between them. So client1.com and client2.com both point to myapp.azurewebsites.net but depending on which url a user came from I serve different pages.
How can I add SSL certificate(s) to that website so nobody gets an invalid domain name error?
Thanks
When you put the website in the correct pricing tier you can add custom domains and ssl certificates yourself.
After you add your domains (client1.com, etc) and after you add your certificats (for client.com,etx) you can set an ssl binding.
That way it should work.
Here are some useful links: https://azure.microsoft.com/en-us/documentation/articles/web-sites-custom-domain-name/ (to add a custom domain to the website)
And here how to add the ssl binding (check step 3) https://azure.microsoft.com/en-us/documentation/articles/web-sites-purchase-ssl-web-site/

Allowing Users to Enter a Custom cname on Azure Websites

I have a multi-site application running on Azure Websites. When a user signs up, they pick a name for their application and they end up with "appname.coolapplication.com". Everything so far is working great within our own domain.
Our application needs to allow users to enter their own custom domain. For example, they want to view their application from "elsewhere.com" rather than "appname.coolapplication.com". How do I go about configuring Azure Websites to allow me to do this?
You don't. Per these instructions you instruct the customer to enter a CNAME record on their domain registrar for the Azure domain, and then it begins to work.
EDIT:
The CNAME only "just works" for Azure Cloud Apps. For Azure Websites, it turns out you must add the domain in the portal as well. I'd thus recommend switching your Azure Websites to Azure Cloud Apps to simplify the issue.
You can use the powershell api to add custom hostnames.
See this question for details: Add many domains to an azure web site

Multiple domains on 1 cloud service

I have a app which is a website builder. Lets say the app is on a azure webrole and its domain is called www.myapp.com.
I want to offer a service where users can use their custom domain with my app. So User 1 has a domain called ww.user1.com, user2 has www.user2.com etc. Whenever someone types www.user1.com, I want them to be able to see come to my my app ie www.myapp.com, with the browser still showing www.user1.com. You can assume I have complete access to the DNS and nameservers of these custom domains. I just need to understand how to configure this in azure.
Not really, as it was on SSL binding of multiple custom domains on a single cloud. I was trying to figure out how to have one app on a cloud service where content changes as per custom domain end user has used to navigate to the website. Turns out its easy, all that is required is cname config and listening to host_header on server side aspx page_init –

Securing authenticated traffic on Azure website without custom certificate

I'm building an ASP.NET MVC website to be hosted as a shared Azure website with custom domain name.
For the backend portion of the site (for specific users only) I need a login form and from that point on all traffic should be SSL encrypted. However I don't have a custom certificate and would like to avoid that extra cost.
I noticed that free websites already serve over HTTPS with a wildcard certificate for *.azurewbesites.net. Is that "free" azurewebsites.net-address also available for shared websites with custom domain(s) so I can simply redirect all "pages" that require authentication via the https://xyz.azurewebsites.net address? I'm aware that would be a cross-domain redirect which is visible to the end-user but that is not an issue since it's only a select group of users...
Yes, using the *.azurewebsites.net domain is your only option to have HTTPS without extra cost. The domain is always available, even if you use a custom domain, because it's used for a few additional services (like your repo, remote console, ...).

Map custom domain (and wildcard sub-domains) to Azure Website

I've looked at all related posts in MSDN and stack overflow but still having difficulty finding a solution.
I am looking to map a domain and all sub-domains to my windows azure website. It is a reserved website instance. I am using Amazon Route 53 DNS manager and have mapped a wildcard CNAME to my azure sub domain, and created a redirect on the naked domain to the www. subdomain.
When I navigate to the naked root, the redirect kicks in and I'm brought to www..com, where I receive a 404 error from azure.
I know the wildcard CNAME is working. I've verified using MXToolbox. If I go to "Manage Domains" in the Azure web UI admin system, I can manually add "www..com" or any other subdomain (e.g. "helloworld..com"). Azure verifies it fine and after saving, I can pull up the website fine by navigating to that subdomain and my azure website loads.
Is there any way to add wild card subdomains without having to verify each one manually through the azure ui interface? My application is a SaaS that relies on custom user sub-domains to serve up their branded website and gain access to their account so I need any and all subdomains to map to my application.
Currently, wildcard domains are not supported as far as I know. At least on Windows Azure Web Sites. They are on the roadmap, but currently you'll have to rely on adding every domain manually.
See wildcard comment on "Configuring a custom domain name for a Windows Azure web site".
Another feature not yet available on Azure Web Sites is SSL using a vanity (your own) domain name. If you want full control of your site(s) you can use Azure Cloud Services instead of Web Sites. With Cloud Services you can provision certificates, domain names, and run multiple sites on the same instances using host header routing.
Anything you can do with IIS Management you can do with a cloud service.
You're a little closer to the metal compared to Azure Web Sites (but not as close as with a VM) and you get load balancing, scaling, caching, and other goodness. Visual Studio 2010/2012 has excellent deployment tooling. You will need to study up on Azure deployment projects from VS, bit it's not bad.

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