Describe the bug
port 4200 exposed, preview not working

To Reproduce
npm install -g @angular/cli
ng new myapp
ng serve --disable-host-check
Expected behavior
preview on port 4200 should work
You need to do:
ng serve --disable-host-check --host 0.0.0.0
Thanks @svenefftinge it worked . closing this issue now
Most helpful comment
You need to do: