Specifications

WAN Configuration 4-23
9. If ESP with Authentication is selected for the ESP type, select the authentication algorithm to be used
with ESP from the ESP Authentication Algorithm menu.
10.Check the Auto Initiate box to enable the feature. This feature ensures that a tunnel is available for use
even when there is no traffic. Normally, the tunnel is disconnected when there is no traffic and the
tunnel's life time gets over.
11.Select Ok to return to the VPN screen.
4.6.5 Setting Up Internet Key Exchange (IKE)
1. Select the Auto (IKE) Key Exchange radio button.
2. Click the IKE Settings button to set up the Internet Key Exchange and the following screen appears.
3DES This option selects the 3DES encryption algorithm, which requires 192-bit (48-character
hexadecimal) keys. When creating keys for 3DES, the first 8 bytes cannot equal the sec-
ond 8 bytes, and the second 8 bytes cannot equal the third 8 bytes.
AES 128-bit This options selects the Advanced Encryption Standard algorithm in use with 128-bit
(32-character hexadecimal) keys.
AES 192-bit This options selects the Advanced Encryption Standard algorithm in use with 192-bit
(48-character hexadecimal) keys.
AES 256-bit This options selects the Advanced Encryption Standard algorithm in use with 256-bit
(64-character hexadecimal) keys.
MD5 Enables the Message Digest 5 algorithm, which requires 128-bit (32-character hexadecimal)
authentication keys.
SHA1 Enables Secure Hash Algorithm 1, which requires 160-bit (40-character hexadecimal) keys.