Virtual Private Networks (VPNs) 12-7
The IP Profile Parameters screen appears.
■Enter the Remote IP Address and Remote IP Mask for the host to which you want to tunnel. The remote IP
address and remote IP mask refer to the remote private network into which your device will be tunnelling.
About IPsec Tunnels
IPsec stands for IP Security, a set of protocols that supports secure exchange of IP packets at the IP layer.
IPsec is deployed widely to implement Virtual Private Networks (VPNs). See Overview on page 12-1 for more
information.
IPsec supports two encryption modes: Transport and Tunnel. Transport mode encr ypts only the data portion
(payload) of each packet, but leaves the header untouched. The more secure Tunnel mode encrypts both the
header and the payload. On the receiving side, an IPsec-compliant device decrypts each packet. Netopia
Routers support the more secure Tunnel mode.
DES stands for Data Encryption Standard, a popular symmetric-key encryption method. DES uses a 56-bit key.
The Netopia 4753 offers IPsec DES encryption over the VPN tunnel.
Configuration
IPsec tunnels are defined in the same manner as PPTP tunnels. You configure the Connection Profile as follows.
From the Main Menu navigate to WAN Configuration and then Add Connection Profile.
IP Profile Parameters
Address Translation Enabled: Yes
NAT Map List... Easy-PAT
NAT Server List... Easy-Servers
Local WAN IP Address: 0.0.0.0
Remote IP Address: 173.167.8.10
Remote IP Mask: 255.255.0.0
Filter Set...
Remove Filter Set
Receive RIP: Both
Enter a subnet mask in decimal and dot form (xxx.xxx.xxx.xxx).
Main
Menu
WAN
Configuration
Add Connection
Profile