Chapter 2. Providing SOHO/Teleworker Connectivity
The traditional teleworker solution consists of a virtual private network (VPN) client on the user’s computer connecting over the Internet to a VPN concentrator, firewall, or Cisco Adaptive Security Appliance (ASA) at the corporate site. This requires only a dialup or broadband Internet connection and a dialup or broadband modem. However, this approach has several shortcomings:
Dialup does not provide the necessary bandwidth to take advantage of all the corporate services, such as Voice over IP (VoIP).
There is no centralized control of the teleworker equipment, so security, virus protection, and so forth are left to the teleworker ...