Setting up VPN’s with the
OfficeConnect Cable/DSL Gateway (3C855) and
OfficeConnect Wireless Cable/DSL Gateway
(3CRWE51196)
1 Introduction
The OfficeConnect Cable/DSL Gateway and OfficeConnect Wireless Cable/DSL
Gateway do not provide any Virtual Private Network (VPN) initiation or termination
functionality. However, they do have a “pass-through” feature, which allows certain
types of VPN traffic through. Table 1 below shows a summary of the VPN traffic
types that the Gateway can pass.
Note that different conditions will apply depending on whether the VPN was initiated
from the LAN (Intranet) side of your Gateway, or whether it was initiated from the
Internet side. From here on, a direction of “From the LAN to the Internet” refers to a
VPN connection initiated from your LAN. “From the Internet to the LAN” refers to a
VPN connection initiated from the Internet.
Table 1 - A Summary of the VPN traffic types supported by the OfficeConnect Cable/DSL
Gateway and OfficeConnect Wireless Cable/DSL Gateway
Direction
VPN Type
From the LAN to the Internet
From the Internet to the LAN
IPSec
see section 2.1
see section 2.2
PPTP
see section 3.1
see section 3.2
L2TP (Windows
2000)
see section 4.1
see section 4.2
The configuration notes that follow all assume that the Gateway is correctly
configured for Internet access.
