ZyXEL ZyWALL 2WG User Guide - Page 285
The ZyWALL's local and peer ID type and ID content must match the remote
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Chapter 14 IPSec VPN Screens In main mode, the ZyWALL 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 ZyWALL and remote IPSec router selected in previous steps. Figure 189 IKE SA: Main Negotiation Mode, Steps 5 - 6: Authentication The ZyWALL and remote IPSec router use a pre-shared key in the authentication process, though it is not actually transmitted or exchanged. " The ZyWALL 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 ZyWALL 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 ZyWALL'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 ID type and content match so the ZyWALL and the remote IPSec router authenticate each other successfully. Table 75 VPN Example: Matching ID Type and Content ZYWALL REMOTE IPSEC ROUTER Local ID type: E-mail Local ID type: IP Local ID content: [email protected] Local ID content: 1.1.1.2 Peer ID type: IP Peer ID type: E-mail Peer ID content: 1.1.1.2 Peer ID content: [email protected] ZyWALL 2 Plus User's Guide 285