3Com OfficeConnect 3C16771, User Manual, Page: 54 / 182

54 C
HAPTER
4: C
OMMAND
R
EFERENCE
For the WAN settings, specify:
■
WAN Router Address
WAN router address, also called the default gateway, is
the address of the router that attaches the LAN to the
Internet.
■
Public Address
This is the IP address used to access the Internet. It will
be the only address seen by Internet users and all
activity on the Internet from the LAN will seem to
originate from this address. This address must be a valid
Public Address and is supplied by the ISP.
■
WAN/DMZ Subnet Mask
The WAN/DMZ Subnet Mask is supplied by the ISP.
For the other settings, specify the DNS Serve rs. These
servers are used by the Internet Firewall to lookup the
addresses of machines used to download the Web Site
Filter and for the built-in
DNS Lookup tool.
Type the required values and click Update to send the
configuration data to the Internet Firewall.
You must restart the Internet Firewall for these changes to
take effect. When computers on the LAN are using address
ranges not in the same subnet as the NAT Public IP
Address, use the Internet Firewall Web Address as the
default gateway or router address used by these computers
to access the Internet.
NAT with DHCP Client
The Internet Firewall can get its NAT Public IP address from
a remote DHCP server on the WAN. When you select NAT
with DHCP, a window similar to that in
Figure 18 is
displayed.