Billion Electric Company BiPAC 5210S - Manual (Page 47)

Public Start IP: This is the starting Inside Public IP Address. Enter 0.0.0.0 here if you
have a dynamic IP address from your ISP.
Public End IP: This is the ending Inside Public IP Address. This field is N/A for
One-to-one, Many-to-One and Server mapping types.
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 .
Attention
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.
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