Like Netgear Armor, the Box protects smart-home devices. You can also get Bitdefender Total Security for unlimited devices with the Bitdefender Box network-security appliance, which retails for $200. (Netgear has a full list of routers that support Netgear Armor here.) That's quite a bargain considering you're getting the same coverage as the $120 Bitdefender Family Pack. You can also add it to routers that have already been purchased. Some new Netgear routers come with one to three free years of Armor protection.
Netgear's newer routers, including the Orbi mesh systems and the Nighthawk line, have optional protection called Netgear Armor that protects smart-home devices and also includes an unlimited-device license for Bitdefender Total Security. There are also two ways to get Bitdefender antivirus protection with home networking hardware.