CCIE Practical Studies: Security (CCIE Self-Study)

VPN Overview

As external connections to your internal networks become an everyday occurrence instead of the exception and as more of your business colleagues work from home, you must establish a new, cost-effective method of extending your security and management policies to these connections. One way to accomplish this is through the use of the Virtual Private Network (VPN) technology, which can offer a secure, reliable connection over a shared public network infrastructure, such as the Internet, at a lower cost than over dedicated private networks. Cisco VPNs can be established across most networking infrastructure platforms, security environments, network services, network appliances, and management scenarios that you are likely to encounter. ...