What is Cloudflare Network Firewall?
Cloudflare Network Firewall is a firewall-as-a-service (FWaaS) offering for on-premises networks and WANs. Instead of backhauling traffic through firewall appliances, filter layer 3 and 4 traffic with the Cloudflare network, which has locations in over 330 cities throughout the world.
Cloudflare Network Firewall runs everywhere in Cloudflare’s global network, letting you inspect layer 3 / 4 traffic no matter where branch offices are located. It also runs in-line with Cloudflare One, the company's comprehensive cloud-based WAN-as-a-Service solution for replacing a patchwork of legacy hardware appliances for networking and security.