Remote Access VPN

This chapter covers the following topics:

  • Cisco IPSec Remote Access VPN Solution
  • Advanced Cisco Remote Access VPN features
  • Deployment scenarios of Cisco Remote Access VPN
  • Monitoring and troubleshooting Cisco Remote Access VPN
  • Cisco WebVPN Solution
  • Advanced WebVPN features
  • Deployment scenarios of WebVPN Solution
  • Monitoring and troubleshooting WebVPN Solution

Remote-access VPN services provide a way to connect home and mobile users to the corporate network. Until half a decade ago, the only way to provide this service was through dialup connections using analog modems. Corporations had to maintain a huge pool of modems and access servers to accommodate remote users. Additionally, they were billed for providing toll-free and long-distance phone services. With the rapid growth of the Internet technologies, more and more dialup mobile users are migrating to broadband DSL and cable-modem connections. As a result, corporations are in the process of moving these dialup users to remote-access VPNs for faster communication.

There are many remote-access VPN protocols available to provide secure network access. The commonly used ones include the following:

  • Point-to-Point Tunneling Protocol (PPTP)
  • Layer 2 Tunneling Protocol (L2TP)
  • Layer 2 Forwarding (L2F) Protocol
  • IPSec
  • L2TP over IPSec

Cisco ASA supports native IPSec to provide VPN services in the most secure fashion. It also incorporates the new WebVPN technology, discussed later in this chapter.





Cisco Asa(c) All-in-one Firewall, IPS, And VPN Adaptive Security Appliance
Cisco ASA: All-in-One Firewall, IPS, and VPN Adaptive Security Appliance
ISBN: 1587052091
EAN: 2147483647
Year: 2006
Pages: 231
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