Sierra Wireless MP 875 manual Problem created by Network Address Translation

Page 69

Note: A similar problem may occur if NAT is in use on your network. The host application may reside on a server that has a private IP address. You must configure the MP modem to send data to a server on your network with a public IP address, and configure the server to recognize the MTP data and route it appropriately.

Sending Data to Your Network Application

The problem created by Network Address Translation

Many service providers use NAT (Network Address Trans‐ lation) which effectively creates a firewall in front of the network. Inside the network, the service providers assign private IP addresses to registered devices, since public IP addresses are not needed to route data within the network. (This saves the service provider the expense of having a large pool of public IP addresses.) A public IP address is substituted for the private IP address when data packets pass through the gateway between the network and the Internet. This public IP address might be used on data transmissions from many different devices. Therefore, the network server is only aware of the substituted public IP address. If the server replies to this address, the network cannot identify the device for which the data was intended.

Assume, for example, an MP modem is registered on a network. The MP modem is assigned a private IP address of 10.95.236.1. When the MP modem sends MTP data to the network server, a public IP address of 24.7.6.30 is substituted at the gateway to the Internet. When the network server receives the data, the host application is only aware of the public IP address, 24.7.6.30. However, if the network server sends data back to the IP address 24.7.6.30, the network has no way of identifying the MP modem for which it is intended and is unable to route the data appropriately.

Firewall

NetworkInternet

Figure 7-1: An MP modem connected to a network server. In this scenario, the IP address is “NAT’d” from 10.95.236.1 to 24.7.6.30. The network server is only aware of the address 24.7.6.30, but if it sends data to that address the network cannot route the data to the MP modem.

 

 

 

 

 

 

 

Rev 1.5 Jul.08

 

 

 

 

 

69

 

 

 

Page 68 Page 70
Image 69
Page 68 Page 70
Contents User Guide Page Important Notice Safety and Hazards Limitation Liability Qualcomm 3G Patents CopyrightTrademarks Contact Information Support@sierrawireless.comRevision History Directing users to the MP 3G Modems AT Command ReferenceContents MP Modem Operation Configuring the Router Functions Support and Warranty Regulatory Information MP875 Modem User Guide 2130808 Introducing the MP Modem Accounts and coverage Network connectionsConnection methods Virtual serial portSupported GSM radio frequencies Software VPN support for RnapMP Modem Manager DocumentationMP875 Modem User Guide Getting Started Plan your MP modem installation Where do you want to install your MP modem?What type of connections do you plan to use? Getting Started Package contents Required equipmentAdditional required equipment System requirements MP modem accessoriesMP875 Modem User Guide 2130808 Hardware and Software Installation Installation overviewMP modem housing Connector panel Overview of installation stepsGPS and I/O options Mount the MP modem Install the MP modemSelect a location for the MP modem Mounting the MP modemGround the MP modem Main RF antenna Mount the antennas and install the cablesGPS antenna MP 595880W onlyAntenna locations Install the antennas and cables Install the power harnessPower connector Molex pinouts Power connectorVehicle installation Ignition sense on/off wiringIgnition sense options Power connections Ground the power harnessCorrect wire splicing Crimp terminalsConnect the MP modem to computer cable Office installationInstall the USB, Ethernet or serial cable Serial connector DB9 pinoutsInstall the software Configure your accountPort connections 10 Placing a SIM card into the sled Insert the SIM CardCreate a profile Set up connection profiles· User Name Test the system MP875 Modem User Guide 2130808 Turning the MP modem on and off MP Modem OperationLED operation Status indicatorsReset the MP modem 3G Watcher software3G Watcher Help Launching 3G Watcher Connection to MP Physical InterfaceChanging the Physical Interface 3G Watcher window Establishing connectionsYou now have DUN connection Auto-Connect for DUNNAT mode Configuring the Router FunctionsNAT mode Non-NAT modeMode MP modem networking basics in NATEnable the router Static IP and TCP/UDP port forwarding in NAT modeSet up static IP addresses File and resource sharing over LANSet up TCP/UDP port forwarding MP875 Modem User Guide 2130808 GPS configuration and reporting Configuring the MP Modem to Report GPS and I/O DataGPS display in 3G Watcher GPS protocols and commandsGPS Taip quick reference Device installation and configurationConnector pinouts Port specificationsDigital input devices Example panic button connections A button wired to Pin 4 digital input and Pin 10 GroundAnalog input devices Digital output devicesExample analog sensor connections Configuration using AT or 3G Watcher commandsExample Analog input setupDigital I/O setup MP875 Modem User Guide 2130808 Report frequency timers Configure the MP modem toSending Data to Your Network Application Route data to a serverTmsumregind Sending Data to Your Network Application IP Addressing Monitoring and Tracking configurationProblem created by Network Address Translation Retrieve the Unique Mobile Device ID Solutions to the NAT problemSupport and Warranty WarrantyTechnical support MP875 Modem User Guide 2130808 Regulatory, radio frequency and electrical specifications Technical SpecificationsWeight and dimensions Environmental specificationsPort characteristics GPS specificationsHost interfaces Other interfacesWPA2 Wireless access point specificationsCanada Regulatory InformationEuropean Union FCC CautionNumerics IndexMTP Index MP875 Modem User Guide 2130808

MP 875 specifications

The Sierra Wireless MP 875 is a cutting-edge device designed to cater to the needs of modern IoT applications and mobile networking solutions. This rugged mobile router stands out for its robustness, versatility, and advanced features, making it an ideal choice for industries such as transportation, public safety, and remote work environments.

At the heart of the MP 875 is its support for both LTE and advanced LTE-A technologies, providing high-speed internet access with speeds reaching up to 300 Mbps. This enables seamless connectivity for multiple devices, supporting applications such as video streaming, real-time data transfer, and cloud-based solutions. The dual-SIM capability enhances network reliability and allows for automatic failover, ensuring continuous connectivity even in remote locations.

One of the key characteristics of the MP 875 is its rugged design, built to withstand tough environmental conditions. The IP67-rated casing ensures protection against dust and water, making it suitable for deployment in harsh outdoor settings. Its wide operating temperature range further enhances its versatility, allowing it to function effectively in extreme heat or cold.

Another notable feature is the onboard Wi-Fi, which supports both 2.4 GHz and 5 GHz bands, enabling the connection of multiple devices with minimal interference. This dual-band functionality provides users with the flexibility to optimize their wireless connections based on their specific requirements. Additionally, the MP 875 includes comprehensive security features, such as VPN support, firewall protection, and advanced encryption protocols to safeguard sensitive data.

Moreover, the device supports various IoT applications, including fleet management, asset tracking, and telemetry. With built-in GPS capabilities, users can easily track the location of their assets or vehicles in real-time, enhancing operational efficiency and safety.

The MP 875 also boasts a user-friendly management interface, allowing for straightforward configuration and monitoring of devices. Remote management capabilities facilitate streamlined updates and troubleshooting, reducing downtime and improving overall productivity.

In conclusion, the Sierra Wireless MP 875 is an advanced mobile router that excels in providing reliable, high-speed connectivity in a rugged form factor. Its blend of LTE technologies, robust design, and comprehensive security features makes it an exceptional choice for businesses looking to leverage the power of IoT and mobile networking. Whether for transporting goods, managing public safety operations, or enabling remote work solutions, the MP 875 is a reliable partner for modern connectivity needs.
Top Page Image Contents