Introduction
Laymen explanation
Technical explanation
Network Functions Virtualization for Security (NFV-S) virtualizes the network and brings advanced network security capabilities into virtualized functions - all in a complete, standardized and elastic solution. It enables seamless automation and orchestration across multiple cloud platforms and unleashes untapped potential of network security functions that can scale up and down with network resources as required.
Through NFV Service, you can deploy secure route-based IPSec VPNs (DMVPN, GETVPN and FlexVPN) and SSL VPN access, enabling you to securely connect distributed sites to your cloud and campus environment. VNFs include next-generation firewall, malware protection, URL and content filtering, IPS and anti-virus, DDOS and VPN/next-generation VPN.
Reference
http://www.wedgenetworks.com/lit/Wedge%20Whitepaper%20NFV-S-06032014.pdf
http://www.wedgenetworks.com/lit/Wedge%20Whitepaper%20NFV-S-06032014.pdf
http://www.versa-networks.com/service-provider/managed-security/