GigaFast Ethernet
Section 6
Multiple DMZ Host
If the WAN connection type is static and there is a range of IP addresses assigned to
the WAN interface instead of a single IP only (please refer to section 3.1), then the
Wireless Router allows 8 computers in the LAN to become DMZ hosts.
In general, the mechanism for multiple DMZ hosts is based on the mapping relation
between the WAN IP and the LAN IP (shown below). These DMZ host IPs will skip
NAT port translation handling to gain unrestricted 2-way communication capability.
Most likely the multiple DMZ host are applied in a router-to-router inter-connection
SOHO environment (please refer to Figure 4 2). It is less popular with home users
due to the “range of WAN IP address” because IP addresses are important and
expensive resources now.
Some ISPs provide leased line services (DSL is a common one) to
subscribers, and can offer a range of IP addresses for subscription. In this
case, there are two type of connection configurations. One is Bridging
mode, the other is Routing mode.
WAN IP1
Wireless Router
LAN IP1 (DMZ host1)
WAN IP2
Wireless Router
LAN IP2 (DMZ host2)
WAN IP3
Wireless Router
LAN IP3 (DMZ host3)
………………………………………………………
WAN IP8
Wireless Router
LAN IP8 (DMZ host8)