Multitech RF650VPN User Manual download pdf (Page 48)

FriendlyNET VPN Security Router

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.

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Multitech RF650VPN User Manual Page 48