  This paper summarizes the challenges identified at the MAMI Management and
Measurement Summit (M3S) for network management with the increased deployment
of encrypted traffic based on a set of use cases and deployed techniques (for
network monitoring, performance enhancing proxies, firewalling as well as
network-supported DDoS protection and migration), and provides recommendations
for future use cases and the development of new protocols and mechanisms. In
summary, network architecture and protocol design efforts should 1) provide for
independent measurability when observations may be contested, 2) support
different security associations at different layers, and 3) replace transparent
middleboxes with middlebox transparency in order to increase visibility,
rebalance control and enable cooperation.
