SMC Networks Barricade SMC7004AWBR - Manual (Page 19)

I
NTRODUCTION
1-5
• Virtual Private Network
The Wireless Barricade supports three of the most commonly
used 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 Wireless Barricade are
briefly described below.
• Point-to-Point Tunneling Protocol – Provides a secure
tunnel for remote client access to a PPTP security gateway.
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 less overhead 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.