Port Mapping - Billion BiPAC 7800GZ(L) User Manual

Port Mapping

Application: Select the service you wish to configure.
Protocol: A protocol is automatically applied when an application is selected from the list-box or
you may select a protocol type which you want. But when RAW is selected, you must set the
protocol number to identify the protocol that the application utilzie.
Protocol Number: when RAW is selected in Protocol field, then type the specific protocol
number ( here.
1~254)
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 Edit radio button to display the parameter of the selected application, then after
changing the parameters click the "Edit/Delete" button to apply the changes.
Delete: To remove a port mapping application, check the Delete box of the selected application
then click the "Edit/Delete" button.
Time Schedule: A self defined time period. You may specify a time schedule for your port
mapping. For setup and detail, refer to Time Schedule section.
Since NAT acts as a "natural" Internet firewall, your router protects your network from accessed 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 (port23),
SMTP (port 25), or POP3 (port 110). When an incoming access request the router for a specified
port is received, it is forwarded to the corresponding internal server.
For example, if you set the port number 80 (Web/HTTP) to be mapped to the IP
Address192.168.1.2, then all incoming HTTP requests from outside users are forwarded to the
local server(PC) with the IP address of 192.168.1.2. If the port is not listed as a predefined
application, you need to add it manually.
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