Zoom Gateway/Router Zoom V3 - Manual (Page 44)

44 Zoom V3 User’s Guide
3.5 Setting Up a DMZ
If you are playing a game or using an application that requires a
specific port or ports to be open, go to page 36 for instructions
on setting up a Virtual Server. A virtual server can have a
maximum of 20 ports open.
If you need more than 20 ports open, or you don’t know which
ports to open (some games or applications like NetMeeting use
“dynamic” ports, meaning that the ports used by the game are
constantly changing, so it is not possible to set specific ports), you
have to set up what is called a DMZ (Demilitarized Zone).
To set up a DMZ, you need to make all four of the settings in the
chart below. You make these settings on the computer where you
set up the DMZ, no matter whether the computer is a Windows,
Macintosh, or Linux computer.
Important!
If your computer already has firewall software installed: If
you have third-party firewall software installed on your
computer, such as the Windows XP firewall, you may need to
deactivate it before opening ports by setting up a virtual server or
a DMZ. If you don’t, your computer may block the ports you are
trying to open.
If you do not know how to deactivate the software, consult your
Windows Help or the documentation that came with your
software or computer.
IP address 10.2.2.16
(see Step 1
below)
Subnet mask 255.255.255.0
Default gateway or router
(V3’s LAN IP address)
10.2.2.2
Preferred DNS server
or Name server
10.2.2.2