The primary use case of this solution is for the web application firewall. We have a Metaswitch system for our telephone service. We're front our SIP provisioning servers and our client communications portals with the WAF.
Loadbalancer.org together with Metaswitch in Enfield, England wrote a set of rules that are being managed on the Loadbalancer to prevent illegal entry, password hacking attempts, invalid SIP provisioning hacking attempts, or just general denial of service attacks into our cloud. It ensures that only what we expect to hit our systems is let through.