The document discusses network security comparing appliance-based and cloud-based solutions, highlighting the advantages of cloud security in terms of scalability, visibility, and adaptability to evolving threats. It notes that by 2018, a significant percentage of corporate data traffic will bypass perimeter security, emphasizing the need for improved cloud coverage. Additionally, it presents OpenDNS as a cloud-delivered network security provider that offers high performance, global coverage, and predictive intelligence to prevent threats.