The best Web Application Firewall (WAF) vendors are F5 BIG-IP, Cloudflare, Imperva Incapsula, Fortinet FortiWeb, and Reblaze.
F5 is the top solution according to IT Central Station reviews and rankings.
One reviewer writes: "Hardware and software partitioning enable us to deploy multiple instances, two vCMPs", and another reviewer writes: "It can determine if the system is going down, then route the traffic somewhere else".
The 2nd best product is Cloudflare. A user writes: "My servers used to have a lot of traffic, we put it on the public settings and now there is no downtime",
and another reviewer writes: "Easy to deploy, gives us peace of mind regarding DDOS attacks".
See our free Buyer's Guide for Web Application Firewall (WAF).