SonicWALL SonicOS Enhanced 2.2 Administrator's Manual page 120

6. Enter a Shared Secret password to be used to setup the Security Association the Shared Secret
field. The Shared Secret must be at least 4 characters long, and should comprise both numbers and
letters.
Optionally, specify a Local IKE ID (optional) and Peer IKE ID (optional) for this Policy. By default,
the IP Address (ID_IPv4_ADDR) is used for Main Mode negotiations, and the SonicWALL Identifier
(ID_USER_FQDN) is used for Aggressive Mode.
7. Click the Network tab.
8. Under Local Networks, select a local network from Choose local network from list if a specific local
network can access the VPN tunnel. If hosts on this side of the VPN connection will be obtaining their
addressing from a DHCP server on the remote side of the tunnel, select Local network obtains IP
addresses using DHCP through this VPN tunnel. If traffic can originate from any local network,
select Any Address.
9. Under Destination Networks, select Use this VPN Tunnel as default route for all Internet traffic
if all remote VPN connections access the Internet through this SA. You can only configure one SA to
use this setting. If the remote side of this VPN connection is be obtaining its addressing from a DHCP
server on this side of the tunnel, select Destination network obtains IP addresses using DHCP
server through this tunnel. Alternatively, select Choose Destination network from list, and select
the address object or group.
VPN Page 107