Chapter 6 Device Security Settings
Vantage CNM User’s Guide
133
6.3.4 VPN Rules (IKE) > Network Policy Move
In the
VPN Rule (IKE)
screen, click the move icon to display the screen shown next.Use this
screen to associate a network policy to a gateway policy.
Figure 61
Device Operation > Device Configuration > Security > VPN > VPN Rules (IKE) >
Network Policy Move
SA Life Time
(Seconds)
Define the length of time before an IPSec SA automatically renegotiates in this
field. The minimum value is 180 seconds.
A short SA Life Time increases security by forcing the two VPN gateways to
update the encryption and authentication keys. However, every time the VPN
tunnel renegotiates, all users accessing remote resources are temporarily
disconnected.
Perfect Forward
Secret (PFS)
Perfect Forward Secret (PFS) is disabled (
NONE
) by default in phase 2 IPSec
SA setup. This allows faster IPSec setup, but is not so secure.
Select
DH1
or
DH2
to enable PFS.
DH1
refers to Diffie-Hellman Group 1 a 768
bit random number.
DH2
refers to Diffie-Hellman Group 2 a 1024 bit (1Kb)
random number (more secure, yet slower).
Enable Replay
Detection
As a VPN setup is processing intensive, the system is vulnerable to Denial of
Service (DOS) attacks. The IPSec receiver can detect and reject old or
duplicate packets to protect against replay attacks. Enable replay detection by
selecting this check box.
Enable Multiple
Proposals
Select this check box to allow the device to use any of its phase 1 or phase 2
encryption and authentication algorithms when negotiating an IPSec SA.
When you enable multiple proposals, the device allows the remote IPSec router
to select which encryption and authentication algorithms to use for the VPN
tunnel, even if they are less secure than the ones you configure for the VPN
rule.
Clear this check box to have the device use only the phase 1 or phase 2
encryption and authentication algorithms configured below when negotiating an
IPSec SA.
Apply
Click
Apply
to save the changes.
Cancel Click
Cancel
to discard all changes and return to the main VPN screen.
Table 49
Device Operation > Device Configuration > VPN > IKE IPSec (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...
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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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