WI-FI protection for free

Hi there

What security software should I use to secure my WI-FI connection for free?

I know that this is possible with CIS pro, but I’m looking only for free stuff.

Best regards

You will find it here:
https://forums.comodo.com/comodo_trustconnect_securing_the_wireless_world/you_wanted_trustconnect_and_wanted_it_for_freewell-t45831.0.html;msg330536#msg330536