Chapter 3 – Using the Web Management Software

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

Allow Access: Select a network or host to which IP packets will be allowed and re-routed. The network/host must be pre-defined in the Network Configuration section.

External Service: Select the External Service that you want allowed. The service must be defined in the Service Configuration section.

LAN IP:Select the LAN IP to which the packets are to be diverted. Only one host can be defined as the destination.

Internal Service: Select the Internal Service to be the destination.

Internal Source: Select the source address for packets that going to be sent. If you do not want to change the address, select NOCHANGE.

Save Button: Click the Save button. The defined DNAT configuration is added and will display at the bottom of the screen. Entries can be deleted or edited by clicking the Edit or the Delete buttons.

Packet Filters > DNAT Example

Set Up DNAT and Port Forwarding to an Internal Device

Note: The internal device can be camera, meter, security device, etc.

Situation: Assume the device is on a LAN with an IP address of 192.168.2.100 and the port to access the device is port 7700.

1.On the Network & Services > Network Configuration screen, set up the following parameters:

Name – Enter a name for the LAN device.

IP Address and Subnet Address – Enter the IP address and subnet address of the device. Example: Name = MeterIP

IP Address = 192.168.2.100 Subnet Address = 255.255.255.255

Add – Click the Add button to save this configuration.

2.On the Network & Services > Service Configuration screen, define a service name. For this example, the service will be a meter.

Name – Enter a name for the service (use a name that will identify the service for you).

Example: MeterPort

Protocol – Select a protocol.

Example: tcp/udp

S-Port / Client – Enter the source port for this service.

Example: 1:65535

D-Port / Server – Enter the destination port for this service.

Example: 7700

Add – Click the Add button to save this configuration.

Multi-Tech Systems, Inc. MultiModem Wireless Modem with Ethernet Interface (S000375B)

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Multi-Tech Systems RJ-9, RJ-45 manual Packet Filters Dnat Configuration, Packet Filters Dnat Example
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RJ-9, RJ-45 specifications

Multi-Tech Systems offers a range of communication solutions, prominently featuring the RJ-45 and RJ-9 connectors that are crucial in networking and telecommunications. These connectors are foundational to many applications, enabling efficient data transfer and ensuring reliable voice communications.

The RJ-45 connector is primarily used in Ethernet networks. It features eight pins and is designed for high-speed data transmission, making it the standard for wired local area networks (LANs). This connector supports various Ethernet standards including Fast Ethernet (100BASE-T), Gigabit Ethernet (1000BASE-T), and even 10 Gigabit Ethernet (10GBASE-T). An essential characteristic of the RJ-45 is its versatility, as it can be used with both straight-through and crossover cable configurations. This flexibility allows for straightforward connectivity between devices such as computers, routers, and switches.

Multi-Tech Systems employs advanced technology in their RJ-45 connectors, including support for Power over Ethernet (PoE). This innovation permits electrical power and data to be transmitted over the same cable, simplifying installations and reducing the need for additional wiring. The robust design of these connectors ensures durability and minimizes signal interference, thereby maximizing data integrity during transmission.

On the other hand, the RJ-9 connector, also known as the RJ-9 or RJ-10 connector, is typically used in telephone and headset applications. Characterized by its smaller size and four or six pins, the RJ-9 is optimized for voice frequency communication. It connects devices such as telephones, headsets, and other VoIP equipment, delivering clear audio quality that is essential for effective communication.

One standout feature of the RJ-9 connector is its ability to provide superior noise resistance, making it ideal for environments with significant electromagnetic interference. Multi-Tech Systems' RJ-9 connectors are designed for ease of use, allowing quick and simple connections. These connectors can often be found in various telephony devices, ensuring that they remain a staple in personal, commercial, and industrial communication systems.

In conclusion, Multi-Tech Systems continues to lead in the provision of reliable RJ-45 and RJ-9 connectors, integrating innovative technologies that enhance performance in data and voice communication. Whether in a high-speed networking environment or in everyday telephony applications, these connectors deliver the functionality and quality demanded by modern users. Their design and engineering reflect a commitment to excellence, helping users stay connected in an increasingly digital world.
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