ZyXEL Communications P-334W - Manual (Page 218)

Prestige 334W User’s Guide
16-8 VPN Screens
If you do not specify an Intranet DNS server on the remote network, then the VPN
host must use IP addresses to access the computers on the remote network.
16.8 ID Type and Content
With aggressive negotiation mode (see Section 16.11.1), the Prestige identifies incoming SAs by ID type
and content since this identifying information is not encrypted. This enables the Prestige to distinguish
between multiple rules for SAs that connect from remote IPSec routers that have dynamic WAN IP
addresses. Telecommuters can use separate passwords to simultaneously connect to the Prestige from IPSec
routers with dynamic IP addresses (see Section 16.17.2 for a telecommuter configuration example).
Regardless of the ID type and content configuration, the Prestige does not allow
you to save multiple active rules with overlapping local and remote IP addresses.
With main mode (see Section 16.11.1), the ID type and content are encrypted to provide identity protection.
In this case the Prestige can only distinguish between up to eight different incoming SAs that connect from
remote IPSec routers that have dynamic WAN IP addresses. The Prestige can distinguish up to eight
incoming SAs because you can select between three encryption algorithms (DES and 3DES), two
authentication algorithms (MD5 and SHA1) and two key groups (DH1 and DH2) when you configure a
VPN rule (see Section 16.12). The ID type and content act as an extra level of identification for incoming
SAs.
The type of ID can be a domain name, an IP address or an e-mail address. The content is the IP address,
domain name, or e-mail address.
Table 16-3 Local ID Type and Content Fields
LOCAL ID TYPE CONTENT
IP Type the IP address of your computer or leave the field blank to have the Prestige
automatically use its own IP address.
DNS Type a domain name (up to 31 characters) by which to identify this Prestige.
E-mail Type an e-mail address (up to 31 characters) by which to identify this Prestige.
The domain name or e-mail address that you use in the Content field is used for identification purposes only
and does not need to be a real domain name or e-mail address.