To specify the
DMZ host
:
Enter the private IP address of the computer to be used as a DMZ host, and select the corre-
sponding check box.
3.4.3.2. Static NAT Mappings
Fig. 35. Static NAT mappings.
An ISP may provide more than one
public
IP address to its customer. A customer could use each of
the public IP addresses for one type of server to be accessed from the Internet. This requirement can
be satisfied by
Static NAT Mappings
. This functionality can be enabled only when the WIASA is in
Router with a Static-IP DSL/Cable Connection
mode.
For example, say an ISP provides 5 public IP addresses, 61.16.33.114 to 61.16.33.118 inclusive, to its
customer, WIASA Technology. The network administrator of WIASA Technology decides to use
61.16.33.114 for the wireless broadband router, 61.16.33.115 for their public Web server, and
61.16.33.116 for their public POP3 server. And the administrator has registered with InterNIC (Inter-
net Network Information Center) some domain name-to-IP address mappings—www.wiasa.com to
61.16.33.115 and pop3.wiasa.com to 61.16.33.116. However, the public Web server and POP3 server
for WIASA Technology sit on the intranet and use private IP addresses, 192.168.0.2 and 192.168.0.3,
respectively. To expose the servers in this situation, the network administrator needs two static NAT
mappings to associate 61.16.33.115 with 192.168.0.2 and 61.16.33.116 with 192.168.0.3, respec-
tively.
To associate a public IP address with a private IP address:
1.
Specify the public IP address and the private IP address for the association.
2.
Select the corresponding
Enabled
check box.
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