Chapter 4: Web Configuration

NAT - Virtual Servers

The Router implements NAT to let your entire local network appear as a single machine to the Internet. The typical situation is that you have local servers for different services and you want to make them publicly accessible. With NAT applied, it will translate the internal IP addresses of these servers to a single IP address that is unique on the Internet. NAT function not only eliminates the need for multiple public IP addresses but also provides a measure of security for your LAN.

When the router receives an incoming IP packet requesting for access to your local server, the router will recognize the service type according to the port number in this packet (e.g., port 80 indicates HTTP service and port 21 indicates FTP service). By specifying the port number, you tell the router which service should be forwarded to the local IP address you specify.

After you setting the virtual server you should modify the filter rule whichever port and service you set on virtual server. Because the firewall has protect the route by filter rule so that you should update the filter rule after you set up virtual server.

Virtual Server allows you to make servers on your LAN accessible to Internet users. Normally, Internet users would not be able to access a server on your LAN because:

Your server does not have a valid external IP Address.

Attempts to connect to devices on your LAN are blocked by the firewall in this device.

The Virtual Server feature solves these problems and allows Internet users to connect to your servers, as illustrated below:

IP Address seen by Internet Users

Please note that, in the above picture, both Internet users are connecting to the same IP address, but using different protocols.

To Internet users, all virtual servers on your LAN have the same IP Address. This IP Address is

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Dynalink RTA770W user manual NAT Virtual Servers, IP Address seen by Internet Users
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RTA770W, RTA770 specifications

The Dynalink RTA770 is a versatile and powerful router designed to meet the demands of modern home and small business networking. Recognized for its reliability and performance, the RTA770 incorporates advanced technologies that enhance connectivity and overall user experience.

One of the main features of the RTA770 is its dual-band capability, offering simultaneous 2.4 GHz and 5 GHz frequency bands. The dual-band functionality allows for greater flexibility in network connections, reducing interference and optimizing performance. The 2.4 GHz band is ideal for devices like smartphones, tablets, and smart home devices that require a stable signal over longer distances. Conversely, the 5 GHz band caters to bandwidth-intensive activities such as online gaming, streaming high-definition videos, and video conferencing, providing faster speeds with reduced latency.

The RTA770 is equipped with the latest Wi-Fi 6 technology, which significantly boosts speed and efficiency. Wi-Fi 6, also known as 802.11ax, enhances wireless throughput, allowing multiple devices to connect simultaneously without compromising on performance. This is especially beneficial for households with numerous smart devices and users, ensuring a seamless online experience.

Security is a prominent consideration in the design of the RTA770. It features advanced encryption protocols, including WPA3, which offers improved protection against unauthorized access and ensures that personal information remains secure while browsing the internet. The router also supports guest network capability, allowing visitors to access the internet without exposing the primary network.

In terms of connectivity, the RTA770 boasts several ports including Gigabit Ethernet ports that facilitate wired connections for devices such as gaming consoles, smart TVs, and computers. This ensures optimal network performance for devices that require stable connections.

Furthermore, the Dynalink RTA770 includes an easy-to-use web interface for quick setup and management of network settings. Users can conveniently monitor connected devices, configure parental controls, and manage bandwidth allocation.

Overall, the Dynalink RTA770 stands out as a robust networking solution, combining dual-band performance, cutting-edge Wi-Fi 6 technology, enhanced security features, and user-friendly management tools. This makes it a compelling choice for both home users and small businesses looking to improve their network infrastructure.
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