Chapter 18 IPSec VPN
ZyWALL 5/35/70 Series User’s Guide
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18.4.2 IPSec High Availability
IPSec high availability (also known as VPN high availability) allows you to use a redundant
(backup) VPN connection to another WAN interface on the remote IPSec router if the primary
(regular) VPN connection goes down.
In the following figure, if the primary VPN tunnel (A) goes down, the ZyWALL uses the
redundant VPN tunnel (B).
Figure 209
IPSec High Availability
When setting up an IPSec high availability VPN tunnel, the remote IPSec router:
• Must have multiple WAN connections
• Only needs one corresponding IPSec rule
• Should only have IPSec high availability settings in its corresponding IPSec rule if your
ZyWALL has multiple WAN connections
• Should ideally identify itself by a domain name or dynamic domain name (it must
otherwise have My Address set to 0.0.0.0)
• Should use a WAN connectivity check to this ZyWALL’s WAN IP address
If the remote IPSec router is not a ZyWALL, you may also want to avoid setting the IPSec rule
to nailed up.
18.4.3 Encryption and Authentication Algorithms
In most ZyWALLs, you can select one of the following encryption algorithms for each
proposal. The encryption algorithms are listed here in order from weakest to strongest.
• Data Encryption Standard (DES) is a widely used (but breakable) method of data
encryption. It applies a 56-bit key to each 64-bit block of data.
• Triple DES (3DES) is a variant of DES. It iterates three times with three separate keys,
effectively tripling the strength of DES.
• Advanced Encryption Standard (AES) is a newer method of data encryption that also uses
a secret key. AES applies a 128-bit key to 128-bit blocks of data. It is faster than 3DES.
See the CLI Reference Guide for how to have the AES encryption apply 192-bit or 256-bit
keys to 128-bit blocks of data.
You can select one of the following authentication algorithms for each proposal. The
algorithms are listed here in order from weakest to strongest.
Содержание ZyWALL 35 Series
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Страница 8: ...Safety Warnings ZyWALL 5 35 70 Series User s Guide 8 ...
Страница 52: ...List of Tables ZyWALL 5 35 70 Series User s Guide 52 ...
Страница 54: ...54 ...
Страница 60: ...Chapter 1 Getting to Know Your ZyWALL ZyWALL 5 35 70 Series User s Guide 60 ...
Страница 86: ...Chapter 2 Introducing the Web Configurator ZyWALL 5 35 70 Series User s Guide 86 ...
Страница 126: ...Chapter 4 Tutorials ZyWALL 5 35 70 Series User s Guide 126 Figure 57 SECURITY VPN VPN Rules IKE Add Network Policy ...
Страница 140: ...Chapter 4 Tutorials ZyWALL 5 35 70 Series User s Guide 140 ...
Страница 146: ...Chapter 5 Registration ZyWALL 5 35 70 Series User s Guide 146 ...
Страница 147: ...147 PART II Network LAN Screens 149 Bridge Screens 161 WAN Screens 167 DMZ Screens 203 WLAN 213 ...
Страница 148: ...148 ...
Страница 160: ...Chapter 6 LAN Screens ZyWALL 5 35 70 Series User s Guide 160 ...
Страница 173: ...Chapter 8 WAN Screens ZyWALL 5 35 70 Series User s Guide 173 Figure 93 NETWORK WAN General ...
Страница 202: ...Chapter 8 WAN Screens ZyWALL 5 35 70 Series User s Guide 202 ...
Страница 212: ...Chapter 9 DMZ Screens ZyWALL 5 35 70 Series User s Guide 212 ...
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Страница 262: ...Chapter 11 Firewall ZyWALL 5 35 70 Series User s Guide 262 Figure 146 SECURITY FIREWALL Rule Summary Edit ...
Страница 274: ...Chapter 11 Firewall ZyWALL 5 35 70 Series User s Guide 274 ...
Страница 294: ...Chapter 13 Configuring IDP ZyWALL 5 35 70 Series User s Guide 294 ...
Страница 320: ...Chapter 15 Anti Spam ZyWALL 5 35 70 Series User s Guide 320 ...
Страница 342: ...Chapter 16 Content Filtering Screens ZyWALL 5 35 70 Series User s Guide 342 ...
Страница 350: ...Chapter 17 Content Filtering Reports ZyWALL 5 35 70 Series User s Guide 350 ...
Страница 363: ...Chapter 18 IPSec VPN ZyWALL 5 35 70 Series User s Guide 363 Figure 210 SECURITY VPN VPN Rules IKE Edit Gateway Policy ...
Страница 373: ...Chapter 18 IPSec VPN ZyWALL 5 35 70 Series User s Guide 373 Figure 213 SECURITY VPN VPN Rules IKE Edit Network Policy ...
Страница 424: ...Chapter 19 Certificates ZyWALL 5 35 70 Series User s Guide 424 ...
Страница 430: ...430 ...
Страница 448: ...Chapter 21 Network Address Translation NAT ZyWALL 5 35 70 Series User s Guide 448 ...
Страница 474: ...Chapter 24 Bandwidth Management ZyWALL 5 35 70 Series User s Guide 474 ...
Страница 514: ...Chapter 26 Remote Management ZyWALL 5 35 70 Series User s Guide 514 ...
Страница 533: ...533 PART V Reports Logs and Maintenance Reports 535 Logs Screens 547 Maintenance 575 ...
Страница 534: ...534 ...
Страница 551: ...Chapter 31 Logs Screens ZyWALL 5 35 70 Series User s Guide 551 Figure 334 LOGS Log Settings ...
Страница 592: ...Chapter 32 Maintenance ZyWALL 5 35 70 Series User s Guide 592 ...
Страница 594: ...594 Troubleshooting 751 Product Specifications 757 ...
Страница 602: ...Chapter 33 Introducing the SMT ZyWALL 5 35 70 Series User s Guide 602 ...
Страница 622: ...Chapter 35 WAN and Dial Backup Setup ZyWALL 5 35 70 Series User s Guide 622 ...
Страница 628: ...Chapter 36 LAN Setup ZyWALL 5 35 70 Series User s Guide 628 ...
Страница 634: ...Chapter 37 Internet Access ZyWALL 5 35 70 Series User s Guide 634 ...
Страница 638: ...Chapter 38 DMZ Setup ZyWALL 5 35 70 Series User s Guide 638 ...
Страница 642: ...Chapter 39 Route Setup ZyWALL 5 35 70 Series User s Guide 642 ...
Страница 658: ...Chapter 41 Remote Node Setup ZyWALL 5 35 70 Series User s Guide 658 ...
Страница 662: ...Chapter 42 IP Static Route Setup ZyWALL 5 35 70 Series User s Guide 662 ...
Страница 700: ...Chapter 45 Filter Configuration ZyWALL 5 35 70 Series User s Guide 700 ...
Страница 738: ...Chapter 50 Remote Management ZyWALL 5 35 70 Series User s Guide 738 ...
Страница 746: ...Chapter 51 IP Policy Routing ZyWALL 5 35 70 Series User s Guide 746 ...
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Страница 770: ...Appendix A Hardware Installation ZyWALL 5 35 70 Series User s Guide 770 ...
Страница 778: ...Appendix B Pop up Windows JavaScripts and Java Permissions ZyWALL 5 35 70 Series User s Guide 778 ...
Страница 780: ...Appendix C Removing and Installing a Fuse ZyWALL 5 35 70 Series User s Guide 780 ...
Страница 802: ...Appendix D Setting up Your Computer s IP Address ZyWALL 5 35 70 Series User s Guide 802 ...
Страница 816: ...Appendix F Common Services ZyWALL 5 35 70 Series User s Guide 816 ...
Страница 852: ...Appendix J Importing Certificates ZyWALL 5 35 70 Series User s Guide 852 ...
Страница 856: ...Appendix K Legal Information ZyWALL 5 35 70 Series User s Guide 856 ...
Страница 862: ...Appendix L Customer Support ZyWALL 5 35 70 Series User s Guide 862 ...