How do you lock wi fi on your laptop?

How do you lock wi fi on your laptop?

If you mean the lock next to the signal strength in the pulldown menu that appears when you click on the wifi icon on the toolbar, that lock means that the network is secure.  The way to get it is to connect to a secure network, one that requires a password. If you are connected to your home network and you don't see that lock, it means anyone can connect to your wireless router.  Not a very secure setup.  Read though your router manual to find out how to set up a secure network.

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