Prestige 652H/HW Series User’s Guide
VPN Screens
16-7
16.7.2 Remote DNS Server
In cases where you want to use domain names to access Intranet servers on a remote network that has a DNS
server, you must identify that DNS server. You cannot use DNS servers on the LAN or from the ISP since
these DNS servers cannot resolve domain names to private IP addresses on the remote network
The following figure depicts an example where three VPN tunnels are created from Prestige 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 Prestige 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 16-4 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.
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 0
for a telecommuter configuration example).
Содержание Prestige 652H series
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Страница 197: ...VPN IPSec V Part V VPN IPSec This part provides information about configuring VPN IPSec for secure communications ...
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