D-Link DSR-150 User Manual page 86

Unified Services Router

This router supports multi-NAT and so the External IP address does not necessarily
have to be the WAN address. On a single WAN interface, multiple public IP addresses
are supported. If your ISP assigns you more than one public IP address, one of these
can be used as your primary IP address on the WAN port, and the others can be
assigned to servers on the LAN or DMZ. In this way the LAN/DMZ server can be
accessed from the internet by its aliased public IP address.
7.
Outbound rules can use Source NAT (SNAT) in order to map (bind) all LAN/DMZ traffic
matching the rule parameters to a specific WAN interface or external IP address (usually
provided by your ISP).
Once the new or modified rule parameters are saved, it appears in the master list of
firewall rules. To enable or disable a rule, click the checkbox next to the rule in the
list of firewall rules and choose Enable or Disable.

The router applies firewall rules in the order listed. As a general rule, you should move
the strictest rules (those with the most specific services or addresses) to the top of the
list. To reorder rules, click the checkbox next to a rule and click up or down.
85
User Manual