Zone-based policy firewall
{"Image DocumentName": "Zone-based policy firewall", "Image ImageDescription": "Zone-based policy firewall configuration model (ZPF or ZBF or ZFW) was introduced in 2006 with Cisco IOS Release 12.4(6)T. With ZPF the interfaces are assigned to zones and then an inspection policy is applied to traffic moving between the zones. The default policy is to block all traffic unless explicitly allowed (CBACs default was allow all). It supports previous firewall features, including SPI, application inspection, URL filtering, and DoS mitigation.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}