Advanced Features
53
Virtual Servers
This feature, sometimes called
Port Forwarding
, allows you to make Servers on your
LAN accessible to Internet users. Normally, Internet users would not be able to access
a server on your LAN because:
•
Your Server does not have a valid external IP Address.
•
Attempts to connect to devices on your LAN are blocked by the firewall in this
device.
The "Virtual Server" feature solves these problems and allows Internet users to con-
nect to your servers, as illustrated below.
Figure 37: Virtual Servers
IP Address seen by Internet Users
Note that, in this illustration, both Internet users are connecting to the same IP Address,
but using different protocols.
To Internet users, all virtual Servers on your LAN have the same IP Address.
This IP Address is allocated by your ISP.
This address should be static, rather than dynamic, to make it easier for Internet users
to connect to your Servers.
However, you can use the
DDNS (Dynamic DNS)
feature to allow users to connect to
your Virtual Servers using a URL, instead of an IP Address.
Virtual Servers Screen
•
The "Virtual Servers" feature allows Internet Users to access PCs on your LAN.
•
The PCs must be running the appropriate Server Software.
•
For Internet Users, ALL of your Servers have the same IP address. This IP ad-
dress is allocated by your ISP.
•
To make it easier for Internet users to connect to your Servers, you can use the
"DDNS" feature. This allows Internet users to connect to your Servers with a URL,
rather than an IP address. This technology works even if your ISP allocates dy-
namic IP addresses (IP address is allocated upon connection, so it may change
each time you connect).
Summary of Contents for ADW-4300A
Page 1: ...802 11g Wireless ADSL Firewall Router ADW 4300A ADW 4300B User s Manual...
Page 4: ......
Page 23: ...Setup 17 Set Stations Button Click this button to manage the trusted PC database...
Page 32: ...ADSL Wireless Firewall Router User Guide 26 Figure 18 Windows NT4 0 DNS...
