6. ProNet notifications between DMS and ISP

Activating filters local to each domain is not enough to block an Internet-wide attack. Moreover, given the large number of source machines involved in an attack, a large number of filters are required.

Applying these filters has an impact on router and firewall performance.

To solve this problem in a comprehensive way, DMS services can work with ISPs to block upstream machines injecting attack traffic as soon as possible, so as to limit the propagation of attack traffic. ISPs can then prevent these machines from connecting to the access network(s), by refusing to allocate IP addresses to them.

In concrete terms, a DPA agent determines...