[legion]

What's been said above.

Do you know how to log onto your router?

Mine I just punch the router's IP address into my web browser, and it comes up with a web page that allows you to configure all the settings.

I have all MAC addresses but my home and work laptops blocked, but no other security.

If you want to have some fun, you should also be able to look up a log of what IP addresses have been accessed through your router. Figure out which are your neighbor's and block them.