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NAT (Network Address Translation)
NAT allows PCs on your LAN to share a single external (Internet) IP Address. This IP Address
is supplied by your ISP. Use the following to determine whether or nor you need NAT.
• For Internet access, NAT
must be left On
unless all PCs on your LAN have valid external
IP Addresses.
• In other situations, NAT is not normally required. With NAT disabled, the CNWR-811P
will act as a static router.
• If NAT is disabled, the Firewall protection provided by the CNWR-811P is lost, and the
Advanced Internet features (Virtual Servers, Special Applications, and DMZ) are no longer
available.
TFTP
TFTP (Trivial FTP) can be used to upgrade the firmware in the CNWR-811P. However, this is
not normally required; there is a Windows utility available for this purpose.
Remote Management
This feature allows you to manage the CNWR-811P via the Internet.
Enable Remote
Management
Enable to allow management via the Internet. If Disabled, this
device will ignore management connection attempts from the WAN
port.
Port Number
Enter a port number between 1024 and 65535 (8080 is recom-
mended). This port number must be specified when you connect
(see below).
Note:
The default port number for HTTP (Web) connections is port
80, but using port 80 here will prevent the use of a Web "Virtual
Server" on your LAN. (See Advanced Internet - Virtual Servers)
Current WAN Port
IP Address
You must use this IP Address to connect (see below).
This IP Address is allocated by your ISP. But if using a Dynamic IP
Address, this value can change each time you connect to your ISP.
So it is better if your ISP allocates you a Fixed IP Address.
To connect from a remote PC via the Internet
1. Ensure your Internet connection is established, and start your Web Browser.
2. In the "Address" bar, enter "HTTP://" followed by the WAN IP Address of the CNWR-
811P. If the port number is not 80, the port number is also required. (After the IP Address,
enter ":" followed by the port number.)
e.g.
HTTP://123.123.123.123:8080
This example assumes the WAN IP Address is 123.123.123.123, and the port number is
8080.