5 Configuring the Security Settings
Ether232
Plus
User Guide
44
Precidia Technologies Inc.
02-CML000057
Protocol
The IPsec protocol defines the method of encryption and authentication to use through
the IPsec tunnel. You can choose between two modes: DES-MD5-96 or 3DES-MD5-
96. Encoding is provided by DES (Data Encryption Standard), a secret key cryptog-
raphy method. DES uses a 56-bit key, while 3DES (tripleDES) uses a 168-bit key.
Authentication is provided by MD5 (Message Digest 5). The message digest allows
the receiver of a packet to ensure that a packet has not been altered en route from the
sender. MD5 is described in RFC1321.
Choose
IPsec Tunnel #1
or
IPsec Tunnel #2
from the
Security Settings
sub-menu.
The
Secure IP Association #1
or
#2
sub-menu appears, as shown below.
4
Select
Protocol
from the
Secure IP Association
sub-menu.
You are prompted to select a new IPsec mode, as shown below.
,-----------------------------------------------------------------------------.
| Precidia Ether232Plus Configuration v4.04.00 |
|-----------------------------------------------------------------------------|
| Device Settings: | Secure IP Association #1: |
| | |
| 1) Ethernet: 192.168.1.28 | A) Protocol: disabled |
| | |
| 2) Serial Port: Transparent | |
| | |
| *) Save Current Configuration | |
| -) Exit Configuration (no save) | |
| $) Security Settings | |
| #) System Settings | |
| ?) Refresh this Screen | |
`-----------------------------------------------------------------------------'
Change which option?
Secure IP Association Menu
A. disabled B. DES-MD5-96 C. 3DES-MD5-96
Choose new IPsec mode (letter) or press ESC to cancel:
Choosing an IPsec Protocol
