Using Port Forwarding Virtual Ips - D-Link D DFL-500 DFL-500 Manual

Network security firewall
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Adding a static NAT virtual IP
In the Map to IP field, enter the real IP address on the more secure network, for example, the IP
address of a web server on your internal network.
The firewall translates the source address of outbound packets from the host with the Map to IP address to
the virtual IP External IP Address, instead of the firewall external address.
Select OK to save the virtual IP.
You can now add the virtual IP to Ext -> Int firewall policies.

Using port forwarding virtual IPs

Go to Firewall > Virtual IP .
Select New to add a virtual IP.
Enter a Name for the virtual IP.
The name can contain numbers (0-9), uppercase and lowercase letters (A-Z, a-z), and the special
characters - and _. Other special characters and spaces are not allowed.
Change Type to Port Forwarding.
In the External IP Address field, enter the external IP address to be mapped to an address in the
more secure zone.
You can set the External IP Address to the address of external interface or to any other address.
For example, if the virtual IP provides access from the Internet to a server on your internal network,
the External IP Address must be a static IP address obtained from your ISP for this server. This
address must be a unique address that is not used by another host. However, this address must be
routed to the firewall external interface.
DFL-500 User Manual
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