What is a firewall? Is it hardware? Software? What does it do? Is it in your computer or somewhere else?

Digital Defenses 101 – Firewalls

We talk about it!

* https://support.microsoft.com/en-us/office/what-is-a-firewall-6870c88d-69b6-4db4-9cb1-0e4afa7a8603

* https://en.wikipedia.org/wiki/Firewall_(computing)

* https://its.ny.gov/sites/default/files/documents/beginners-guide-to-firewalls-2012.pdf

* https://lifehacker.com/how-to-turn-your-computers-firewall-on-and-off-for-begi-5805326

* https://www.pcmag.com/how-to/do-you-need-a-personal-firewall

* https://www.howtogeek.com/205299/how-to-ensure-your-home-router-has-the-latest-security-updates/