What does it take to deploy Gatekeeper on an ISP?
Gatekeeper has been designed from the perspective of hosting companies, cloud providers, and content providers, but it should work in an ISP setting as well.
A Gatekeeper deployment in an ISP can go two ways. The first option is simply for colocating Gatekeeper servers from other deployments, so the ISP can reduce the load on their backbones by dropping packets as close to the sources as possible.
The second option is for an ISP to deploy Gatekeeper to protect their customers that pay for Internet access. When a customer is DDoSed, not only is the customer helpless, but the ISP may also have to mitigate the impact on other customers. Besides the regular features that Gatekeeper already offers to write policies, in this setting, ISPs may be able to collect information from the modems/routers of customers in order to make policies very specific to each customer.
This issue as it is now is more a stub since any development will require to work with an engaged ISP to identify the challenges and possibly new features to add to Gatekeeper in order to have a production deployment in an ISP.