Wireless ADSL Modem User’s Manual 43
Virtual Server
The
Virtual Server Configuration
page allows users to set the configuration of Virtual
Server. The firmware includes the Free BSD version firewall. All UDP/TCP ports are
protected from intrusion. If any specific local PCs need to be mapped to the UDP/TCP
port on WAN side, please input the mappings here.
This product’s NAT firewall filters out unrecognized packets to protect your Intranet, so
all hosts behind this product are invisible to the outside world. If you wish, you can make
some of them accessible by enabling the virtual server.
The Virtual Server allows you to set up public services, such as a Web server, FTP, E-
mail etc. that can be accessed by external users of the Internet. Each service is provided
by a dedicated network computer configured with a fixed IP address.
Set up private network computers to act as servers and configure each server with a fixed
IP address. Enter the desired service port numbers in the public port and private port field
and specify port type as TCP or UDP.
Well-known ports are
Port number
Service
Port number
Service
7
Echo 79 Finger
20,21 FTP 80 HTTP
23 Telnet
110
POP3
25 SMTP
161
SNMP
53 DNS
162
SNMP
Traps
Click” Add this setting” button after you set and click “save settings” to save all
configuration.
