Chapter 11 IPSec VPN
P-793H User’s Guide
156
11.1.1.4 Authentication
Before the ZyXEL Device and remote IPSec router establish an IKE SA, they have to verify
each other’s identity. This process is based on pre-shared keys and router identities.
In main mode, the ZyXEL Device and remote IPSec router authenticate each other in steps 5
and 6, as illustrated below. Their identities are encrypted using the encryption algorithm and
encryption key the ZyXEL Device and remote IPSec router selected in previous steps.
Figure 79
IKE SA: Main Negotiation Mode, Steps 5 - 6: Authentication
The ZyXEL Device and remote IPSec router use a pre-shared key in the authentication
process, though it is not actually transmitted or exchanged.
"
The ZyXEL Device and the remote IPSec router must use the same pre-
shared key.
Router identity consists of ID type and ID content. The ID type can be IP address, domain
name, or e-mail address, and the ID content is a specific IP address, domain name, or e-mail
address. The ID content is only used for identification; the IP address, domain name, or e-mail
address that you enter does not have to actually exist.
The ZyXEL Device and the remote IPSec router each has its own identity, so each one must
store two sets of information, one for itself and one for the other router. Local ID type and ID
content refers to the ID type and ID content that applies to the router itself, and peer ID type
and ID content refers to the ID type and ID content that applies to the other router in the IKE
SA.
"
The ZyXEL Device’s local and peer ID type and ID content must match the
remote IPSec router’s peer and local ID type and ID content, respectively.
In the following example, the ZyXEL Device and the remote IPSec router authenticate each
other successfully.
Table 49
VPN Example: Matching ID Type and Content
ZYXEL DEVICE
REMOTE IPSEC ROUTER
Local ID type: E-mail
Local ID type: IP
Local ID content: tomasz@yourcompany.com
Local ID content: 1.1.1.2
Summary of Contents for G.SHDSL.bis 4-port Security Gateway P-793H
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Page 7: ...Safety Warnings P 793H User s Guide 7 This product is recyclable Dispose of it properly ...
Page 8: ...Safety Warnings P 793H User s Guide 8 ...
Page 30: ...List of Figures P 793H User s Guide 30 ...
Page 36: ...List of Tables P 793H User s Guide 36 ...
Page 38: ...38 ...
Page 68: ...Chapter 4 Point to 2 point Configuration P 793H User s Guide 68 ...
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Page 114: ...Chapter 7 Network Address Translation NAT Screens P 793H User s Guide 114 ...
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Page 152: ...Chapter 10 Content Filtering P 793H User s Guide 152 ...
Page 180: ...Chapter 12 Static Route P 793H User s Guide 180 ...
Page 194: ...Chapter 14 Dynamic DNS Setup P 793H User s Guide 194 ...
Page 216: ...Chapter 16 Universal Plug and Play UPnP P 793H User s Guide 216 ...
Page 217: ...217 PART IV Maintenance System 219 Logs 225 Tools 229 Diagnostic 235 ...
Page 218: ...218 ...
Page 224: ...Chapter 17 System P 793H User s Guide 224 ...
Page 234: ...Chapter 19 Tools P 793H User s Guide 234 ...
Page 238: ...238 ...
Page 244: ...Chapter 21 Introducing the SMT P 793H User s Guide 244 ...
Page 248: ...Chapter 22 General Setup P 793H User s Guide 248 ...
Page 256: ...Chapter 23 WAN Setup P 793H User s Guide 256 ...
Page 262: ...Chapter 24 LAN Setup P 793H User s Guide 262 ...
Page 278: ...Chapter 27 Static Route Setup P 793H User s Guide 278 ...
Page 308: ...Chapter 30 Filter Configuration P 793H User s Guide 308 ...
Page 310: ...Chapter 31 SNMP Configuration P 793H User s Guide 310 ...
Page 312: ...Chapter 32 System Password P 793H User s Guide 312 ...
Page 322: ...Chapter 33 System Information Diagnosis P 793H User s Guide 322 ...
Page 352: ...Chapter 37 Schedule Setup P 793H User s Guide 352 ...
Page 360: ...360 ...
Page 366: ...Appendix B Wall mounting Instructions P 793H User s Guide 366 ...
Page 400: ...Appendix F IP Address Assignment Conflicts P 793H User s Guide 400 ...
Page 404: ...Appendix G Common Services P 793H User s Guide 404 ...
Page 432: ...Appendix K Legal Information P 793H User s Guide 432 ...
Page 443: ...Index P 793H User s Guide 443 ...
Page 444: ...Index P 793H User s Guide 444 ...