Chapter 6 Device Security Settings
Vantage CNM User’s Guide
138
6.3.7 VPN Global Setting
Select a device, click
Device Operation
>
Device Configuration
>
Security
>
VPN
>
Global Setting
tab to open the screen shown next. Use this screen to change your device’s
global settings.
Encryption Algorithm
Select
DES
,
3DES
or
NULL
from the drop-down list box.
When you use
DES
or
3DES
, both sender and receiver must know the
Encryption Key
, which can be used to encrypt and decrypt the
messages. 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.
Select
NULL
to set up a tunnel without encryption. When you select
NULL
, you do not enter an encryption key.
Authentication Algorithm
When you use
SHA1
or
MD5
, both sender and receiver must know the
Authentication Key
, which can be used to generate and verify a
message authentication code. 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.
Encryption Key
This field only applies when you select
ESP
. With
DES
, type a unique
key 8 ASCII characters long. With
3DES
, type a unique key 24 ASCII
characters long. Any characters may be used, including spaces, but
trailing spaces are truncated.
Authentication Key
Type a unique authentication key to be used by IPSec if applicable.
Enter 16 characters for
MD5
authentication or 20 characters for
SHA-
1
authentication. Any characters may be used, including spaces, but
trailing spaces are truncated.
Apply
Click
Apply
to save your changes back to the device.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Table 52
Device Operation > Device Configuration > Security > VPN > VPN Rules (Manual)
> Add/Edit (continued)
LABEL
DESCRIPTION
Содержание Centralized Network Management Vantage CNM
Страница 1: ...www zyxel com Vantage CNM Centralized Network Management User s Guide Version 3 0 11 2007 Edition 1...
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Страница 24: ...Vantage CNM User s Guide 24...
Страница 30: ...Vantage CNM User s Guide 30...
Страница 33: ...33 PART I Introduction Introducing Vantage CNM 31 GUI Introduction 35...
Страница 34: ...34...
Страница 52: ...52...
Страница 58: ...Chapter 4 Device General Settings Vantage CNM User s Guide 58...
Страница 108: ...Chapter 5 Device Network Settings Vantage CNM User s Guide 108...
Страница 184: ...Chapter 6 Device Security Settings Vantage CNM User s Guide 184...
Страница 207: ...Chapter 7 Device Advanced Settings Vantage CNM User s Guide 207...
Страница 208: ...Chapter 7 Device Advanced Settings Vantage CNM User s Guide 208...
Страница 210: ...Chapter 8 Device Log Vantage CNM User s Guide 210...
Страница 234: ...Chapter 9 Device Configuration Management Vantage CNM User s Guide 234...
Страница 248: ...248...
Страница 264: ...Chapter 14 VPN Monitor Vantage CNM User s Guide 264...
Страница 265: ...265 PART IV Monitor Device Status Monitor 267 Device HA Status Monitor 269 Device Alarm 271...
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Страница 276: ...Chapter 17 Device Alarm Vantage CNM User s Guide 276...
Страница 277: ...277 PART V Log Report Device Operation Report 279 CNM Logs 291 VRPT 293...
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Страница 296: ...Chapter 20 VRPT Vantage CNM User s Guide 296...
Страница 298: ...298...
Страница 312: ...Chapter 21 CNM System Setting Vantage CNM User s Guide 312...
Страница 318: ...Chapter 24 Vantage CNM Software Upgrade Vantage CNM User s Guide 318...
Страница 322: ...Chapter 26 About Vantage CNM Vantage CNM User s Guide 322...
Страница 323: ...323 PART VII Account Management Group 325 Account 329...
Страница 324: ...324...
Страница 328: ...Chapter 27 Group Vantage CNM User s Guide 328...
Страница 332: ...Chapter 28 Account Vantage CNM User s Guide 332...
Страница 333: ...333 PART VIII Troubleshooting Troubleshooting 335...
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Страница 338: ...Chapter 29 Troubleshooting Vantage CNM User s Guide 338...
Страница 340: ...340...
Страница 378: ...Appendix E IP Address Assignment Conflicts Vantage CNM User s Guide 378...
Страница 382: ...Appendix F Common Services Vantage CNM User s Guide 382...
Страница 416: ...Appendix H Open Software Announcements Vantage CNM User s Guide 416...
Страница 424: ...Appendix J Customer Support Vantage CNM User s Guide 424...
Страница 428: ...Index Vantage CNM User s Guide 428...
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