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Securing your web app in Azure

29 April 2018 By Frans Lytzen

So you have deployed your web app to Azure. Now, how do you go about making it secure? I gave a talk on this topic at DotNet Oxford on 24 April 2018 and recorded it. You can view the video below.

The video runs through a scenario using an ASP.Net Web App hosted on Azure App Service and covers a number of features you can use to improve your security - as well as a number of features that are not available for App Services.

The talk covers a lot of ground in an hour and everything is kept at a high level, but is nonetheless heavy on examples and code.
Watching the video myself, I realised I say “Okay” and “So” way, way too much. Sorry…

James World made this nice sketch note of the talk, reproduced with permission.
Sketch note

The source code is on GitHub.

Some key timings

Use SSL 11:03
Virus scanning 20:01
WAF 21:00
Vnet 23:20
Azure Key Vault 26:10
Managed Service Identity 27:50
Use Key Vault and managed identify to store secrets 29:55
ASP.Net Core configuration with Key Vault 31:55
Connect to Azure SQL with Managed Identity (or not) 36:27
Encrypt data at rest 38:00
Require secure transport 40:30
SQL Always Encrypted 41:40
Storage client-side encryption (not shown) 52:00
Use Azure AD to access Azure 53:25
Use Azure AD to access Azure SQL 54:05
Supporting Security tools in Azure 56:50
Detection 57:45

Originally posted on Frans’ blog.