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SONICWALL SONICOS ENHANCED 2.5 ADMINISTRATOR’S GUIDE
C
HAPTER
29:
Configuring VPN Policies
8
Define an Incoming SPI and an Outgoing SPI. The SPIs are hexadecimal (0123456789abcedf)
and can range from 3 to 8 characters in length.
S
Alert: Each Security Association must have unique SPIs; no two Security Associations can share the
same SPIs. However, each Security Association Incoming SPI can be the same as the Outgoing SPI.
9
The default values for Protocol, Phase 2 Encryption, and Phase 2 Authentication are
acceptable for most VPN SA configurations.
Note: The values for Protocol, Phase 2 Encryption, and Phase 2 Authentication must match the
values on the remote SonicWALL.
10
Enter a 16 character hexadecimal encryption key in the Encryption Key field or use the default
value. This encryption key is used to configure the remote SonicWALL encryption key, therefore,
write it down to use when configuring the remote SonicWALL.
11
Enter a 32 character hexadecimal authentication key in the Authentication Key field or use the
default value. Write down the key to use while configuring the remote SonicWALL settings.
9
Tip: Valid hexadecimal characters include 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a,b, c, d, e, and f.
1234567890abcdef is an example of a valid DES or ARCFour encryption key. If you enter an incorrect
encryption key, an error message is displayed at the bottom of the browser window.
12
Click the Advanced tab and select any of the following optional settings you want to apply to your
VPN policy.
Select Enable Windows Networking (NetBIOS) broadcast to allow access to remote network
resources by browsing the Windows® Network Neighborhood.
Select Apply NAT Policies if you want the SonicWALL to translate the Local, Remote or both
networks communicating via this VPN tunnel. To perform Network Address Translation on the
Local Network, select or create an Address Object in the Translated Local Network drop-down
box. To translate the Remote Network, select or create an Address Object in the Translated
Remote Network drop-down box. Generally, if NAT is required on a tunnel, either Local or
Remote should be translated, but not both. Apply NAT Policies is particularly useful in cases
where both sides of a tunnel use either the same or overlapping subnets.
S
Alert: You cannot use this feature if you have selected Use this VPN Tunnel as the default route
for all Internet traffic on the Network tab.
To manage the remote SonicWALL through the VPN tunnel, select HTTP, HTTPS, or both from
Management via this SA.
Select HTTP, HTTPS, or both in the User login via this SA to allow users to login using the SA.
If you have an IP address for a gateway, enter it into the Default LAN Gateway (optional) field.
Select an interface from the VPN Policy bound to menu.
13
Click OK.
14
Click Apply on the VPN >Settings page to update the VPN Policies.
Tip: Since Window Networking (NetBIOS) has been enabled, users can view remote computers in
their Windows Network Neighborhood. Users can also access resources on the remote LAN by
entering servers’ or workstations’ remote IP addresses.