Id Type And Content; Figure 123 Vpn Host Using Intranet Dns Server Example - ZyXEL Communications P-661HW User Manual

The following figure depicts an example where three VPN tunnels are created from ZyXEL
Device A; one to branch office 2, one to branch office 3 and another to headquarters. In order
to access computers that use private domain names on the headquarters (HQ) network, the
ZyXEL Device at branch office 1 uses the Intranet DNS server in headquarters. The DNS
server feature for VPN does not work with Windows 2000 or Windows XP.

Figure 123 VPN Host using Intranet DNS Server Example

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.

13.9 ID Type and Content

With aggressive negotiation mode
identifies incoming SAs by ID type and content since this identifying information is not
encrypted. This enables the ZyXEL Device 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 ZyXEL Device from IPSec routers
with dynamic IP addresses
example).
Regardless of the ID type and content configuration, the ZyXEL Device does not allow you to
save multiple active rules with overlapping local and remote IP addresses.
With main mode
provide identity protection. In this case the ZyXEL Device can only distinguish between up to
12 different incoming SAs that connect from remote IPSec routers that have dynamic WAN IP
addresses. The ZyXEL Device can distinguish up to 12 incoming SAs because you can select
between three encryption algorithms (DES, 3DES and AES), two authentication algorithms
(MD5 and SHA1) and two key groups (DH1 and DH2) when you configure a VPN rule
(seeSection 13.13 on page
for incoming SAs.
Chapter 13 VPN Screens
(seeSection 13.12.1 on page
(seeSection 13.18 on page 226
(seeSection 13.12.1 on page
218). The ID type and content act as an extra level of identification
P-661H/HW Series User's Guide
217), the ZyXEL Device
for a telecommuter configuration
217), the ID type and content are encrypted to
209