- For internet traffic: TCP ports 80 and 443 and UDP ports 53, 67 and 123.
- For UPnP UDP 5000 (but since he can play UpnPfiles that port seems to be open already)
- For Chromecast to work as well as our smartphone remote app to work: mDNS discovery needs to be turned on. This is typically on by default on most routers.