VPN
32
CG3000DCR Advanced Cable Modem Gateway
Set Up a Client-to-Gateway VPN Configuration
Setting up a VPN between a remote computer running the VPN client and a network gateway
involves these two steps:
1.
Configure the VPN tunnel between the remote computer and the network gateway.
2.
Configure the VPN client endpoint.
Table 3. Sample client-to-gateway VPN tunnel
VPN Tunnel Configuration
Connection Name
RoadWarrior
Pre-Shared Key
12345678
Secure Association
Main
Perfect Forward
Secrecy
Disabled
Encryption Protocol
3DES
Authentication
Protocol
SHA-1
Diffie-Hellman (DH)
Group
Group 2
Key Life in seconds
28800 (8 hours)
IKE Life Time in
seconds
3600 (1 hour)
VPN Endpoint
Local IPSec ID
LAN IP Address
Subnet Mask
FQDN or
Gateway IP
(WAN IP Address)
Client
toCG3000D
—
—
Dynamic
CG3000DCR
toClient
192.168.3.1
255.255.255.0
22.23.24.25
Configure the VPN Client on the Remote Computer
This overview assumes that the computer running the client has a dynamically assigned IP
address. The computer must have a VPN client program installed that supports IPSec.
To configure the VPN client:
1.
Add a connection.
2.
Configure the security policy in the VPN client software.
3.
Configure the VPN client identity.
4.
Configure the VPN client authentication.