Magic Firewall is a firewall-as-a-service (FWaaS) delivered from the Cloudflare global network to protect office networks and cloud infrastructure with advanced, scalable protection. With Magic Firewall, you can apply filter rules on a variety of criteria, such as protocol and packet length, to filter unwanted traffic before it reaches your network.
Magic Firewall uses Wireshark syntax, a domain-specific language common in the networking world and the same syntax used across our other products. With this syntax, you can easily craft powerful rules to precisely allow or deny any traffic in or out of your network. You can also choose to create rules from your Cloudflare dashboard under Application Security > Magic Firewall.