Can Public-Cloud Security Meet Its Unique Challenges?

Because cloud-computing environments' security vulnerabilities differ from those of traditional data centers, perimeter-security approaches will no longer work. Security must move from the perimeter to the virtual machines.

Traditional Information Security and Virtualization

Traditionally, data centers consist of large collections of server farms implementing perimetersecurity measures including firewalls, demilitarized zones, intrusion-detection-and-prevention systems (IDS/IPS), and network-moni-toring tools.r’ Administrative access typically is through a LAN (intranet) to limit external access.