问题
I have recently moved a .NET Web API 2 app from an Azure Cloud Service to an Azure Web App. However, we have a legacy application that needs to communicate with the API on ports 8080 and 444.
Is there a way of opening additional ports on a web app?
回答1:
No, you cannot. Only ports 80 and 443 are open.
Check this answer on Server Fault: https://serverfault.com/a/751548/394375.
If you need that control, you can use Cloud Services or Virtual Machines.
回答2:
No, As junnas mentioned that only 80 or 443 Tcp ports are already-explosed.We also can get more detail info about WebApp sandbox from the document.
All Azure Web Apps (as well as Mobile App/Services, WebJobs and Functions) run in a secure environment called a sandbox.The only way an application can be accessed via the internet is through the already-exposed HTTP (80) and HTTPS (443) TCP ports. However, applications may create a socket which can listen for connections from within the sandbox.
回答3:
As described here: https://docs.microsoft.com/en-us/azure/load-balancer/tutorial-load-balancer-port-forwarding-portal you can achieve port forwarding with azure load balancer.
回答4:
While Azure Web App cannot expose ports 8080 and 444, you could use Application Gateway to export those ports and route incoming traffic on 8080 and 444 to ports 80 or 443 on a Web App.
来源：https://stackoverflow.com/questions/43516071/open-additional-ports-on-azure-web-app