The evolution of the application landscape has made it more difficult for firewalls to protect the corporate network. An increasing number of consumer and business applications are using sophisticated security evasion techniques such as dynamic or random port numbers, and application emulation/tunneling. The result is an enterprise network that is rife with unapproved and uncontrollable applications – unseen by traditional firewalls – that brings unwanted exposure to a wide range of security and compliance related risks.