Virtual Private Networks (VPNs) 12-9
■
You must enter an
Encryption Key
if the Encr yption Transform is DES. The key for DES must be a
hexadecimal string of 16 characters, using Hex characters only: '0'-'9', 'A'-'F' and 'a' - 'f'. No key entr y
appears if the encr yption transform is NULL.
■
You must specify an
Authentication Type
. The default is
ESP
, and the choices are
ESP
,
None
, or
AH
.
ESP
provides confidentiality over the IP payload and optional authentication of the IP payload and ESP header.
AH
(Authentication Header) provides authentication over the immutable par ts of the IP header, AH header
and the IP payload. ESP is preferred.
■
You must specify an
Authentication Transform
if the Authentication Type is anything other than None. The
default is
HMAC-MD5-96
, and the choices are
HMAC-MD5-96
or
HMAC-SHA1-96
for both AH and ESP.
■
You must specify an
Authentication Key
if the Authentication Type is anything other than None. The key
must be an ASCII string of up to 48 characters for both HMAC-MD5-96 and HMAC-SHA1-96.
Key
: The key is a hexadecimal entr y of 16 bytes (32 characters of input) for MD5 and 20 bytes (40
characters of input) for SHA1. It is not possible to view the Encr yption Keys or Authentication Key once they
have been set.
■
Press
COMMIT
to return to the Add Connection Profile screen.
■
Select
IP Profile Parameters
.
IPsec Encryption & Authentication Options
Encryption Transform... DES
Encryption Key:
Authentication Type... ESP
Authentication Transform... HMAC-MD5-96
Authentication Key:
COMMIT CANCEL
Enter a key of 16 Hex digits, e.g. '1234567890ABCDEF'
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