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Chapter 14 VPN Screens
P-2802H(W)(L)-I Series User’s Guide
198
14.12 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.
Figure 111
Two Phases to Set Up the IPSec SA
In phase 1 you must:
• Choose a negotiation mode.
• Authenticate the connection by entering a pre-shared key.
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 Setup
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 ZyXEL Device.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Advanced Setup
Click
Advanced Setup
to configure more detailed settings of your IKE key
management.
Table 77
VPN Setup; Edit
LABEL
DESCRIPTION
Summary of Contents for P-2802H-I Series
Page 1: ...www zyxel com P 2802H W L I Series VDSL VoIP IAD User s Guide Version 3 70 6 2007 Edition 1...
Page 2: ......
Page 7: ...Safety Warnings P 2802H W L I Series User s Guide 7...
Page 8: ...Safety Warnings P 2802H W L I Series User s Guide 8...
Page 10: ...Contents Overview P 2802H W L I Series User s Guide 10...
Page 32: ...List of Tables P 2802H W L I Series User s Guide 32...
Page 33: ...33 PART I Introduction Introducing the ZyXEL Device 35 Introducing the Web Configurator 43...
Page 34: ...34...
Page 50: ...Chapter 2 Introducing the Web Configurator P 2802H W L I Series User s Guide 50...
Page 51: ...51 PART II Wizard Internet and Wireless Setup Wizard 53 VoIP Wizard And Example 65...
Page 52: ...52...
Page 64: ...Chapter 3 Internet and Wireless Setup Wizard P 2802H W L I Series User s Guide 64...
Page 70: ...Chapter 4 VoIP Wizard And Example P 2802H W L I Series User s Guide 70...
Page 72: ...72...
Page 82: ...Chapter 5 Status Screens P 2802H W L I Series User s Guide 82...
Page 88: ...Chapter 6 WAN Setup P 2802H W L I Series User s Guide 88...
Page 116: ...Chapter 8 Wireless LAN P 2802H W L I Series User s Guide 116...
Page 154: ...Chapter 10 Voice P 2802H W L I Series User s Guide 154...
Page 174: ...Chapter 11 Firewalls P 2802H W L I Series User s Guide 174...
Page 178: ...Chapter 12 Content Filtering P 2802H W L I Series User s Guide 178...
Page 184: ...Chapter 13 Introduction to IPSec P 2802H W L I Series User s Guide 184...
Page 238: ...Chapter 16 Static Route P 2802H W L I Series User s Guide 238...
Page 250: ...Chapter 17 Quality of Service QoS P 2802H W L I Series User s Guide 250...
Page 254: ...Chapter 18 Dynamic DNS Setup P 2802H W L I Series User s Guide 254...
Page 282: ...Chapter 20 Universal Plug and Play UPnP P 2802H W L I Series User s Guide 282...
Page 284: ...284...
Page 324: ...Chapter 25 Troubleshooting P 2802H W L I Series User s Guide 324...
Page 334: ...Chapter 26 Product Specifications P 2802H W L I Series User s Guide 334...
Page 336: ...336...
Page 348: ...Appendix A Setting up Your Computer s IP Address P 2802H W L I Series User s Guide 348...
Page 404: ...Appendix G Legal Information P 2802H W L I Series User s Guide 404...
Page 410: ...Appendix H Customer Support P 2802H W L I Series User s Guide 410...