N300 Wireless Dual Band ADSL2+ Modem Router DGND3300v2 User Manual
-The typical automated Internet Key Exchange (IKE) setup (see Using Auto Policy to Configure VPN Tunnels on page 101)
-A manual keying setup in which you must specify each phase of the connection (see Using Manual Policy to Configure VPN Tunnels on page 109)
Table 2. Parameters Recommended by the VPNC and Used in the VPN Wizard
Parameter | Factory Default Setting |
|
|
Secure Association | Main Mode |
|
|
Authentication Method | |
|
|
Encryption Method | 3DES |
|
|
Authentication Protocol | |
|
|
Group 2 (1024 bit) | |
|
|
Key Life | 8 hours |
|
|
IKE Life Time | 1 hour |
|
|
•What level of IPSec VPN encryption will you use?
-DES. The Data Encryption Standard (DES) processes input data that is 64 bits wide, encrypting these values using a
-3DES. Triple DES achieves a higher level of security by encrypting the data three times using DES with three different, unrelated keys.
•What level of authentication will you use?
-MDS. 128 bits, faster but less secure.
-
VPN Tunnel Configuration
There are two tunnel configurations and three ways to configure them:
•Use the VPN Wizard to configure a VPN tunnel (recommended for most situations):
-See Setting Up a
-See Setting Up a
•See Using Auto Policy to Configure VPN Tunnels on page 101 when the VPN Wizard and its VPNC defaults (see Table 2 on page 79) are not appropriate for your special circumstances, but you want to automate the Internet Key Exchange (IKE) setup.
•See Using Manual Policy to Configure VPN Tunnels on page 109 when the VPN Wizard and its VPNC defaults (see Table 2 on page 79) are not appropriate for your special circumstances and you must specify each phase of the connection. You manually enter all the authentication and key parameters. You have more control over the process; however, the process is more complex, and there are more opportunities for errors or
Chapter 6. Virtual Private Networking 79
