10-2 User’s Reference Guide

Network Address Translation works by remapping the source IP address of traffic from the LAN to a single static or dynamically assigned IP address shown to the remote side of the router.

HOW NAT WORKS

With NAT

192.168.1.100

ISP* 192.168.1.102 192.168.1.103

163.167.132.1

192.168.1.104

192.168.1.105

192.168.1.106

Without NAT

 

 

163.167.132.1

163.167.132.1

163.167.132.2

163.167.132.3

163.167.132.2

 

163.167.132.3

 

163.167.132.4

 

163.167.132.5

163.167.132.4

163.167.132.6

 

 

163.167.132.5

 

163.167.132.6

 

*or corporate intranet router

The feature can be implemented on a per Connection Profile basis. The network router can use two or more Connection Profiles simultaneously to connect to two or more networks. Each profile may have Network Address Translation enabled.

When Network Address Translation is enabled, the Netopia R2121 can either use a statically assigned IP address, or one dynamically assigned each time the router connects to the ISP. While a dynamically assigned IP address offers the ISP more flexibility, it does have an important limitation. The router will require a static IP address to support Web, FTP, or other services available to the WAN. To support these services with Network Address Translation enabled, a service can only be associated with one machine on the LAN.

When connected to the Internet or some other large network using Network Address Translation, the individual machines on your LAN are not directly accessible from the WAN. Network Address Translation provides an inherently secure method of connection to the outside world.

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Netopia R2121 manual HOW NAT Works

R2121 specifications

The Netopia R2121 is a powerful and versatile router designed for both home and office environments, providing seamless connectivity and robust performance for various networking needs. This device offers a range of features and technologies that cater to the demands of modern users seeking reliable internet access, speed, and security.

One of the standout characteristics of the Netopia R2121 is its dual-band technology, which operates on both the 2.4 GHz and 5 GHz frequency bands. This capability allows users to enjoy faster speeds and less interference, as the 5 GHz band is typically less congested than the traditional 2.4 GHz band. With the ability to support multiple devices simultaneously, the R2121 ensures that users can stream videos, play online games, and conduct video conferences without experiencing lag or connectivity issues.

The router is equipped with advanced security features, including WPA3 encryption, which provides enhanced protection against unauthorized access and data breaches. The R2121 also supports a robust firewall system that guards against external threats, ensuring that the user's network remains secure. Additionally, the router includes parental controls, allowing users to manage and restrict internet access for specific devices or set time limits for usage, making it an excellent choice for families.

Another significant advantage of the Netopia R2121 is its extensive coverage area. With high-gain antennas and advanced beamforming technology, the router can deliver strong and stable Wi-Fi signals even in larger homes or office spaces. This technology focuses the Wi-Fi signal directly toward connected devices, minimizing dead zones and improving overall connectivity.

The R2121 also supports both IPv4 and IPv6, ensuring compatibility with current and future internet technologies. This forward-thinking design makes it a future-proof solution for users looking to invest in a reliable router.

In terms of setup and management, the Netopia R2121 features a user-friendly web interface that allows users to easily customize settings, monitor network performance, and manage connected devices. The inclusion of mobile app support further enhances the user experience, enabling remote monitoring and control of the network from anywhere.

Overall, the Netopia R2121 stands out as a robust and reliable router that combines advanced features, enhanced security, and excellent performance, making it an ideal choice for home and business users alike. With its focus on delivering seamless connectivity and comprehensive management options, the R2121 is well-suited for today's connected lifestyles.