Castle warrior

摘要

Historically, network security has often been equated to the medieval practice of building castles and walls to keep intruders at bay. In today's world of network castles, the castle paradigm has largely served us well for the last 15--20 years, but attacks are evolving to counter the once great firewalls that have protected our network castles and our crown jewels. It is time to revisit the castle doctrine and evolve our defenses to address the new targeted threats.