Multi-Tech Systems MultiModem - Manual (Page 26)

Chapter 3 – Using the Web Management Software
Multi-Tech Systems, Inc. MultiModem Wireless Modem with Ethernet Interface (S000375A) 26
Packet Filters > DNAT Configuration
Destination Network Address Translation (DNAT) is a process that allows the placing of servers within the protected
network and making them available for a certain service to the outside world. The DNAT process running of the
wireless modem/router translates the destination address of incoming packets to the address of the real network
server on the LAN. The packets are then forwarded.
You can Delete or Edit a DNAT rule after it has been defined and added by using the table at the bottom of the
screen.
Important Note: When adding rules, at least one host must be defined in the Network Configuration section.
DNAT Configuration
Source: Enter the original target network or host of the IP packets that are to be re-routed.
The network/host must be pre-defined in the Network Configuration section.
Pre-DNAT Service: Allows the service for the Pre-DNAT destination entry field to be chosen from the
drop-down list. The service must have already been defined in the Service
Configuration section.
Post DNAT IP: Enter the IP packets destination to which the packets are to be diverted. Only one
host can be defined as the Post DNAT destination.
Post DNAT Service: Enter the service for the Post DNAT Destination.
Add Button: Click the Add button. The defined DNAT configuration is added and will display at the
bottom of the screen.