Gateway none manual Chapter

CHAPTER 1

VPN protocols - PPTP, L2TP and IPSec. These protocols allow remote users to establish a secure connection to their corporate network. If your service provider supports VPNs, then any of these protocols can be used to create an authenticated and encrypted tunnel for passing secure data over the Internet (i.e., a traditionally shared data network). The VPN protocols supported by the Gateway are briefly described below:

*Point-to-Point Tunneling Protocol: Provides a secure tunnel for remote client access to a PPTP security gate- way. PPTP includes provisions for call origination and flow control required by ISPs.

*Layer Two Tunneling Protocol - Includes most of the features provided by PPTP, but has fewer overheads and is more suited for managed networks.

*IP Security - Provides IP network-layer encryption. IPSec can support large encryption networks (such as the Internet) by using digital certificates for device authentication

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