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y
Ports
Enter the desired service port numbers in the
“Ports”
fields.
y
TCP/UDP
You can specify the protocol type as
“TCP”
or
“UDP”
from
the frame. If you are not sure which one to select, click “
TCP
” and
“
UDP
”. A selection of well-known service port numbers is provided on
this screen.
y
Redirect IP Address
Enter the appropriate IP Addresses of the
service computers in the
“Redirect IP Address”
locations.
y
Enable
Choose the Enable frame you wish to allow the Virtual Server.
Example
: If the service port number
80~80
(representing an HTTP web
address) is entered in
“Ports”
and
192.168.1.100
is entered in
“Redirect IP Address”
, then all HTTP requests from external Internet
users will be directed to the PC/server with the 192.168.1.100 fixed IP
Address.
Here is a list of the protocol and port ranges that are used by some
common applications.
Application Protocol
Port
Range
FTP Server
TCP
21
Half Life
UDP
6003, 7002, 27010, 27015,
27025
MSN Messenger
TCP
TCP
UDP
UDP
UDP
TCP
6891-6900 (File-send)
1863
1863
5190
6901 (Voice)
6901 (Voice)
PC Anywhere host TCP
UDP
5631
5632
Quake 2
UDP
27910
Quake III
UDP
27660 (first player)
"C:\Program Files\Quake III
Arena\quake3.exe" +set net_port 27660
27661 (second player)
Telnet Server
TCP
23
Web Server
TCP
80
4-4 DMZ Host
The DMZ Host application allows unrestricted 2-way communication between
a single LAN PC and other Internet users or servers. This application is useful
for supporting special-purpose services such as video-conferencing and
gaming, that require proprietary client software and/or 2-way user
communication.
To use this application, you must first obtain a fixed Public IP Address from
your ISP. Note that in order to provide unrestricted access, the Firewall
