Edi Wang

Azure Developer, Microsoft MVP

All Posts


Securing My Blog with Azure Web Application Firewall (WAF)

Website developers and operation will inevitably encounter hackers. There are many fully automated hacking tools and scripts on the Internet that can scan your website for known security vulnerabilities and launch fully automated attacks in an attempt to seize control of the server. As a result, businesses often purchase web site application firewalls (WAFs) and deploy in front of the web server …

Azure WAF

Test Network Speed Between Azure VMs Using iPerf

When it comes to measuring network speed, you might think of testing the Internet connection speed with the famous speedtest. But in fact, just testing the Internet connection speed is not reliable. In some scenarios, the final Internet speed is also affected by the your infrastructure like the connection to your ISP's server. Therefore, it is very important to know where your network performance …

Azure Network

How to Restore Connection After Accidentally Disabled NIC on Azure VM

Normally, we uses cloud based VMs through SSH or RDP, so a network connection is necessary for connecting to the VM. But what if you accidentally disabled the NIC on your cloud VM? You may want to call Azure Support or find a previous snapshot for restoring VM. That's not necessary! Azure can help you restore your NIC by yourself in a few steps. Experiment I created a Windows Server 2019 VM …

Azure VM

Configure URL Redirect on Azure Front Door

Azure Front Door is a global entry point service for websites. Including features like DDOS, WAF, website failover. I have introduced it in "A Brief Introduction for Azure Front Door". This article specifically introduces the usage of URL redirection in Azure Front Door. When to do URL redirection URL redirection is mainly used to redirect users to a new location of a resource. The most …

Azure Front Door

Setup a Private NPM Server on Azure in 45 Seconds

Recently, my company needs to use a private NPM server. I did some research and finally chose verdaccio, an open source and free product. However, the environment setup is a huge trouble. Since it is Linux friendly, but my company only has Windows Server 2012 R2, I have to follow the incorrect official document and Googled a lot, finally it took me nearly 5 hours to install on the server. During …

Azure Docker NPM

Migrating an ASP.NET Core Web API Project to Azure Function

Some time ago, I successfully migrated an ASP.NET Core Web API project to the latest Azure Function V3, thereby taking advantage of the serverless features of the Azure platform to reduce operation and maintenance costs by 10 times. This article will introduce the key steps and practices in the migration process to help you migrate similar Web API projects. Project background This Web API …

Web API Azure .NET Core Azure Function

Solving Azure AD Sign In Failure with Azure Front Door

Today I am migrating my blog to use Azure Front Door which I have introduced in a previous blog post last year. Everything went well except for the blog admin sign in. I configured my blog to Azure AD as SSO. But after I put the blog behind Azure Front Door with my custom domain, OIDC Redirect URL just blow up. OIDC Redirection Failure When I tried to sign in, the redirection URL suddenly …

Azure Azure AD Front Door

Use Azure Function to Schedule Auto Start for VMs

VMs on the Microsoft Azure platform can be configured to automatically shut down by schedule. However, currently only VMs in the DevTest Lab service can be powered on automatically. Regular VMs have not been updated with the auto start capability. But still we can take advantage of Azure Function V3 and PowerShell Core to start the VM by timed schedule. The Idea I have wrote a post 6 year ago …

Azure PowerShell VM Azure Function

Fix 'Cannot Delete Payment Method' for Expired Credit Card on Azure

Recently my credit card for Azure expired. I have to replace it with a new card. But when I added my new card and try to delete my old credit card, Azure pop up an error saying "Cannot delete payment method(s)" and indicates that the card is in use. I was trying to delete credit card from "Cost Management + Billing" - "Payment methods" screen. The reason why Azure won't let me delete my old …

Azure

Import Data to Azure Storage Table from SQL Server

Recently, there was a demand to switch the data storage from SQL Server database to Azure Storage Table. However, neither SSMS nor Azure Portal provide a direct import function. You may now consider writing a tool to import data, but actually it isn't necessary. I still managed to do it within mouse clicks. But the first thing to warn everyone is that relational databases like SQL Server are not …

SQL Server Azure Storage