LevelOne FBR-1461 - Manual (Page 80)

80
Port Mapping

Application: Select the service you wish to configure

Protocol: Automatic when you choose Application from listbox or select a protocol
type which you want.

External Port & Internal Port: Enter the public port number & range you wish to
configure.

Internal IP Address: Enter the IP address of a specific internal server to which
requests from the specified port is forwarded.

Add: Click to add a new virtual server rule. Click again and the next figure appears.

Edit:
Check the Rule No. you wish to edit and then click “Edit/Delete”.

Delete: Check the R ule No. you wish to delete, then click “Edit/Delete”.
Since NAT acts as a “natural” Internet firewall, your router protects your network from
access by outside users, as all incoming connection attempts point to your router unless
you specifically create Virtual Server entries to forward those ports to a PC on your
network. When your router needs to allow outside users to access internal servers, e.g. a
web server, FTP server, Email server or game server, the router can act as a “virtual
server”. You can set up a local server with a specific port number for the service to use,
e.g. web/HTTP (port 80), FTP (port 21), Telnet (port 23), SMTP (port 25), or POP3 (port
110). When an incoming access request to the router for a specified port is received, it is
forwarded to the corresponding internal server.