Prestige 652H/HW Series User’s Guide
16-16
VPN
Screens
Table 16-7 VPN IKE
LABEL DESCRIPTION
Encryption Algorithm Select
DES
,
3DES
,
AES
or
NULL
from the drop-down list box.
When you use one of these encryption algorithms for data communications, both
the sending device and the receiving device must use the same secret key, which
can be used to encrypt and decrypt the message or to generate and verify a
message authentication code. The DES encryption algorithm uses a 56-bit key.
Triple DES (
3DES
) is a variation on
DES
that uses a 168-bit key. As a result,
3DES
is more secure than
DES
. It also requires more processing power, resulting in
increased latency and decreased throughput. This implementation of
AES
uses a
128-bit key.
AES
is faster than
3DES
.
Select
NULL
to set up a tunnel without encryption. When you select
NULL
, you do
not enter an encryption key.
Authentication
Algorithm
Select
SHA1
or
MD5
from the drop-down list box.
MD5
(Message Digest 5) and
SHA1
(Secure Hash Algorithm) are hash algorithms used to authenticate packet
data. The
SHA1
algorithm is generally considered stronger than
MD5
, but is
slower. Select
MD5
for minimal security and
SHA-1
for maximum security.
Advanced Click
Advanced
to configure more detailed settings of your IKE key management.
Back
Click
Back
to return to the previous screen.
Apply
Click
Apply
to save your changes back to the Prestige.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Delete
Click
Delete
to delete the current rule.
16.11 IKE Phases
There are two phases to every IKE (Internet Key Exchange) negotiation – phase 1 (Authentication) and phase
2 (Key Exchange). A phase 1 exchange establishes an IKE SA and the second one uses that SA to negotiate
SAs for IPSec.
Summary of Contents for Prestige 652H series
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Page 120: ...Prestige 652H HW Series User s Guide 8 12 WAN Setup Figure 8 6 Advanced WAN Backup ...
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Page 214: ...Prestige 652H HW Series User s Guide 16 10 VPN Screens Figure 16 5 VPN IKE ...
Page 227: ...Prestige 652H HW Series User s Guide VPN Screens 16 23 Figure 16 8 Manual Setup ...
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Page 277: ...Maintenance VIII Part VIII Maintenance This part covers the maintenance screens ...
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