Your router should be able to show you all devices connected to it. If it's
a public router and you want to know who-all-else is connected, you won't be
able to unless you have administrative access to the router.
Hi
Wireless Network is a very broad term.
If you want "secure" answer you should be more specific.
I.e., what the Network's Devices are comprised of?
Jack (MS, MVP-Networking)