ZyXEL Communications P-334U - Manual (Page 147)

P-334U/P-335U User’s Guide
Chapter 13 IPSec VPN 147
13.2 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 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 89 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.
13.3 VPN Summary
Click Security > VPN to display the Summary screen. This is a read-only menu of your VPN
rules (tunnels). Edit a VPN by clicking the Edit icon.
Figure 90 Security > VPN > Summary