Asante Technologies VR2004 - Manual (Page 48)

FriendlyNET VPN Security Router 48
The following sections describe the parameters that will need to be
entered for a manually keyed tunnel.
4.4.1 Incoming and Outgoing SPI (Security Parameter
Index)
The SPI is a 32-bit field that the router will use to identify the Secure
Association. Enter a different 8 hexadecimal digit (such as
“12abcdef” or “01234567”) into each the Incoming SPI and Outgo-
ing SPI fields.
The incoming SPI MUST match the outgoing SPI at the other end of
the tunnel. Similarly, the outgoing SPI value MUST match the in-
coming SPI at the other end of the tunnel.
4.4.2 Encryption Protocol
The router supports two encryption algorithms: DES and 3DES. Use
the drop down menu to select a protocol (Selecting NULL disables
encryption).
Note: The protocol chosen must match that used by the remote de-
vice.
4.4.3 Encryption Key
This string is used as a key to encrypt and decrypt the data trans-
mitted. Use an alpha-numeric value of 24 characters for 3DES
(max. length for DES is 8 characters).
Note: The value entered must match that used by the remote de-
vice.
4.4.4 Authentication Protocol
The router supports two authentication algorithms, MD5 and SHA-1.
Use the drop down menu to select the desired protocol.
Note: The selected protocol must match that used by the remote
device.