User Guide

Page 118 SonicWALL Internet Security Appliance User’s Guide
• Outgoing SPI - Enter the Security Parameter Index (SPI) that the local SonicWALL
transmits to identify the Security Association used for the VPN Tunnel. The SPI may be
up to eight characters long and is comprised of hexadecimal characters. Valid
hexadecimal characters are "0" to "9", and "a" to "f" inclusive (0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
a, b, c, d, e, f). The hexadecimal characters "0" to "ff" inclusive are reserved by the
Internet Engineering Task Force (IETF) and are not allowed for use as an SPI. These
numbers are not accepted by the SonicWALL when entered as an SPI; an error
message is displayed at the bottom of the Web browser window when Update is
pressed. For example, a valid SPI would be 1234abcd.
Note: A Security Association's SPI must be unique when compared to SPIs used in other
Security Associations. However, a Security Association's Incoming SPI may be the same
as the Outgoing SPI.
Destination Networks
In this section, enter the network settings for the remote VPN site. Include the subnet mask
which determines broadcast addresses for NetBIOS support.
integrated_manual.book Page 118 Friday, October 12, 2001 2:56 PM