Security and privacy have, for the most part, been seen as the responsibility of network engineers because most data and processing have been contained within the enterprises' walls. Now that mobile devices are capable of running applications outside of the enterprise, we are finding that traditional firewall approaches are providing inadequate protection.

Why is the current practice of securing the enterprise by hiding it behind hardened firewalls becoming extinct?

What should network engineers expect to happen with security in 2 years?

What will networks look like in 2 years, given the proliferation of mobile devices?