Network performance and security are vital elements of any business. Organisations are increasingly adopting virtualisation and cloud technologies to boost productivity, cost savings and market reach. With the added complexity of distributed network architectures, full visibility is necessary to ensure continued high performance and security. Greater volumes of data, rapidlyevolving threats and stricter regulations have forced organisations to deploy new categories of security tools, e.g. Web Access Firewalls (WAFs) or Intrusion Prevention Systems (IPS).