Billion BiPAC 8500/8520 User Manual page 150

Example:
If you like to access your Router remotely through the Web/HTTP at all time, you would need to
enable port number 80 (Web/HTTP) and map to the Router IP Address. Then all incoming
HTTP requests from you (Remote side) will be forwarded to the Router with the IP address of
192.168.1.254. Since port number 80 has already been predefined, next to the Application
click Helper. When a predefined rule window pops up, select HTTP_Sever from the rule list.
Application: HTT_Sever
Time Schedule: Always On
Protocol: tcp
External Port: 80-80
Redirect Port: 80-80
IP Address: 192.168.1.254
• Edit: Click it to edit virtual server application.
• Delete: Click it to delete virtual server application.
Attention
Chapter 4: Configuration
Billion BiPAC 8500/8501/8520/8521 SHDSL (VPN) Firewall Bridge/ Router
Using port forwarding does have security implications, as outside users
will be able to connect to PCs on your network. For this reason you are
advised to use specific Virtual Server entries just for the ports your
application requires, instead of using DMZ. As doing so will result in all
connections from the WAN attempt to access to your public IP of the
DMZ PC specified.
If you have disabled the NAT option in the WAN-ISP section, the Virtual
Server function will hence be invalid.
If the DHCP server option is enabled, you have to be very careful in
assigning the IP addresses of the virtual servers in order to avoid conflicts.
The easiest way of configuring Virtual Servers is to manually assign static
IP address to each virtual server PC, with an address that does not fall into
the range of IP addresses that are to be issued by the DHCP server. You
can configure the virtual server IP address manually, but it must still be in
the same subnet as the router.
146