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Chapter 6: Using the Web-based Utility
The Router Tab
IP Telephony System
The Router - Application Screen
This screen lets you configure port forwarding, DMZ, and reserved ports range settings.
Port Forwarding Settings
Enable. Select yes or no for each port forwarding entry, which defines a port range to be forwarded to a server.
The default is no.
Service Name. Enter the name of the service or application.
Starting Port. Enter the starting port number of the forwarded port range.
Ending Port. Enter the ending port number of the forwarded port range.
Protocol. Select the protocol used, TCP, UDP, or Both. The default is TCP.
Server IP Address. Enter the IP address of the server, 192.168.0.x (x being a different number for each server
you specify).
DMZ Settings
Enable DMZ. DMZ hosting forwards all ports at the same time to one computer. This allows one local user to be
exposed to the Internet for use of special-purpose services such as videoconferencing. Select yes or no from the
drop-down menu. The default is no.
DMZ Host IP Address. Enter the IP address of the DMZ host, 192.168.0.x (x being the number for the computer
you want to specify). Use the Static DHCP Lease Settings section on the LAN Setup screen, so the DMZ Host
keeps this IP address; otherwise, its IP address may change.
System Reserved Ports Range
Starting Port. This port range defines the random TCP/UDP ports used by the application running on the System.
They cannot be used by port forwarding or DMZ. Enter the starting port number of the reserved ports range. The
default is 50000.
Num of Ports Reserved. Select the number of ports you want to reserve: 256, 512, or 1024. The default is 256.
When you have finished making changes, click the Submit All Changes button to save the changes, or click the
Undo All Changes button to undo your changes.
Figure 6-7: Router - Application Screen
tcp: a network protocol for transmitting data that
requires acknowledgement from the recipient of
data sent.
udp: a network protocol for transmitting data
that does not require acknowledgement from
the recipient of the data that is sent.
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