Add comment on this guide

This design represents a chapter from the overall SAFE Design Guide. The enterprise WAN edge, along with the enterprise branch, provides users at geographically disperse remote sites with access to the same rich network services as users at the main site. The availability and overall security of the WAN edge, and WAN transit, is thus critical to global business operations.

The challenge, from a security perspective, is enabling the enterprise to confidently embrace and extend these rich global services and remote collaboration capabilities to all locations. This is achieved through a defense-in-depth approach to security that extends and integrates consistent end-to-end security policy enforcement and system-wide intelligence and collaboration across the entire enterprise network.