The basic idea behind the home firewall in present time is also that most of the time no one will try & hack your home system in general.
I remember one of the posts on PCMag has explained it very nicely how to traffic from the switch is processed by a firewall. If you want to buy the Firewall for home I would recommend you to go & buy the latest adapter available online. the security features might have changed over time. It's just like Antivirus you need a better one next time.

Cisco Certified Network, Level 5 Engineer.