local IP addresses, then enter 0.0.0.0 as the Local Start IP address and 255.255.255.255 as
the Local End IP address. This field is N/A for One-to-one and Server mapping types.
Public Start IP: This is the start range for 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 end range for 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.
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.
Attention
4.3.4 QoS
Quality of Service (QoS) helps to prioritize data as it enters your router. By attaching special
identification marks or headers to incoming packets, QoS determines which queue the
packets enter, based on priority. This is useful when there are certain types of data you want
to give higher priority to, such as voice data packets given higher priority than Web data
packets.
The main goal of QoS is prioritizing incoming data, preventing data loss due to factors such
as jitter, delay and dropping. Another important aspect of QoS is ensuring that prioritizing
one data flow doesn’t interfere with other data flows.
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