Setting Up Automatic Key Exchange - Motorola WS2000 - Wireless Switch - Network Management Device System Reference Manual

AES 128-bit This option selects the Advanced Encryption Standard algorithm in use with 128-bit (32-
character hexadecimal) keys.
AES 192-bit This option selects the Advanced Encryption Standard algorithm in use with 192-bit (48-
character hexadecimal) keys.
AES 256-bit This option selects the Advanced Encryption Standard algorithm in use with 256-bit (64-
character hexadecimal) keys.
8. Provide keys for both
of the keys is mandated by the selected encryption algorithm. These keys must match the opposite keys
at the remote gateway. The outbound key here must match the inbound key at the remote gateway, and
the inbound key here must match the outbound key at the remote gateway.
9. If ESP with Authentication
ESP from the ESP Authentication Algorithm
MD5 Enables the Message Digest 5 algorithm, which requires 128-bit (32-character hexadeci-
mal) authentication keys.
SHA1 Enables Secure Hash Algorithm 1, which requires 160-bit (40-character hexadecimal)
keys.
10.If ESP with Authentication
Authentication
11.Provide two (up to) eight-character hexadecimal values used to identify the inbound and outbound
security association created by the encryption algorithm. These values must match the reciprocal
inbound/outbound SPI values configured on the remote security gateway, so the local inbound key must
match the remote outbound key, and so on. This value should also be unique across all tunnels on the
system.
12.Select Ok to return to the VPN screen.

4.5.4 Setting Up Automatic Key Exchange

1. Select the Auto (IKE) Key Exchange
Settings buttons.
2. Click the Automatic Key Settings
appears.
Inbound ESP Encryption Key
is enabled, an authentication algorithm must be selected to be used with
is enabled, specify both the
Keys.
radio button. This enables the Automatic
button to set up this security scheme and the following screen
and Outbound ESP Encryption
menu.
Inbound and Outbound ESP
4-17
WAN Configuration
Key. The length
Key Settings and IKE