Default deny.

What Does a Firewall Do To Protect My Home Network Your email has been sent Understanding what firewalls do (and don't do) takes just a few minutes. Learn what a firewall does to keep intruders out in ...

Firewalls are guard dogs in a box, designed to resist brute-force attacks, foil hackers and generally police everything going in and out of networks. It’s hard not to rely on them. But it’s also easy ...