5 Configuring the Security Settings Ether232Plus User Guide
46 Precidia Technologies Inc. 02-CML000057
SPI
SPI (Security Parameters Index) is a 32-bit hexadecimal number used to identify the
security association of an IP packet. The SPI is used to look up the Encode and
Authenticate Keys, and must be the same at both ends of the tunnel. The first 256 SPI
values are reserved, but you can use any number from 100 hex up to FFFFFFFF hex as
the SPI.
To enter or change the SPI:
1 Choose
SPI
from the Secure IP Association sub-menu.
You are prompted to enter the SPI for this tunnel in Hex digits.
2 Type the SPI (up to 8 characters long) at the prompt, and press
Enter
.
Network Address
The Network Address under the Secure IP Association sub-menu is the network
address of the remote device.
To enter or change the Network Address:
1 Choose
Network Address
from the Secure IP Association sub-menu.
You are prompted to enter the IP address of the secure network.
2 Type the address at the prompt (in the format xxx.xxx.xxx.xxx) and press
Enter
.
Network Mask
Network Mask is the subnet mask of the network on which the remote device resides.
To enter or change the Network Mask:
1 Choose
Network Mask
from the Secure IP Association sub-menu.
You are prompted to enter the subnet mask of the secure network.
2 Type the network mask at the prompt (in the format xxx.xxx.xxx.xxx) and press
Enter
.
Network Gateway
The Network Gateway under the Secure IP Association sub-menu is the address of the
gateway of the network on which the remote device resides.
To enter or change the Network Gateway:
1 Choose
Network Gateway
from the Secure IP Association sub-menu.
You are prompted to enter the IP address of the secure network’s gateway.
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