Configure reverse proxy for windows update

Question

Hello, We have the following scenario : We have multiple windows servers in our infrastructure which needs to get updates from Microsoft but they don't have internet connection We have deployed a reverse proxy(nginx) and in it's config we have defined a path "wsus.local" which we want to point to some online windows update location to avoid deploying a wsus in our infrastructure. Unfortunately it is not working.....we modified the config like : gpedit ->Computer Configuration -> Windows Componenets -> Windows Update -> Configure Automatic Updates -> Specify Intranet Microsoft update service location, and also setting a proxy with netsh. We should mention that if we are using our own wsus , it is working. Nginx config(we tried every server mentioned without luck) : upstream wsus_backend { server x.x.x.x:8530;

server windowsupdate.microsoft.com:80;

server download.windowsupdate.com:80;

server download.microsoft.com:80;

server wustat.windows.com:80;

server ntservicepack.microsoft.com:80;

server go.microsoft.com:80;

server dl.delivery.mp.microsoft.com:80;

} Our question is : It is even possible what we are trying to achieve? Thanks in advance