Oddly, home is where you'd want it announcing itself like that, and the work environment is where you'd want it to keep quiet.
Except for the password-protection facility, once it's on the network it's as accessible to your co-workers' PCs as it is to yours... to pretend otherwise would be to give you a false sense of security. If you don't want a USB device appearing on your co-worker's PC, you don't plug it into your co-worker's USB port; so, analogously, if you don't want people on the LAN seeing your LAN device, don't plug it into the LAN...

Peter