N150 Wireless ADSL2+ Modem Router DGN1000Bv3

Your modem router then sends this request message through the Internet to the web server at www.example.com.

4.The web server at www.example.com composes a return message with the requested web page data. The return message contains the following address and port information. The web server then sends this reply message to your modem router:

Source address. The IP address of www.example.com

Source port number. 80, which is the standard port number for a web server process

Destination address. The public IP address of your modem router

Destination port number. 33333

5.Upon receiving the incoming message, your modem router checks its session table to determine whether there is an active session for port number 33333. Finding an active session, the modem router then modifies the message to restore the original address information replaced by NAT. Your modem router sends this reply message to your computer, which displays the web page from www.example.com. The message now contains the following address and port information:

Source address. The IP address of www.example.com

Source port number. 80, which is the standard port number for a web server process

Destination address. Your computer’s IP address

Destination port number. 5678, which is the browser session that made the initial request

6.When you finish your browser session, your modem router eventually detects a period of inactivity in the communications. Your modem router then removes the session information from its session table, and incoming traffic is no longer accepted on port number 33333.

Port Triggering to Open Incoming Ports

Some application servers (such as FTP and IRC servers) send replies to multiple port numbers. Using the port triggering function of your modem router, you can tell the modem router to open more incoming ports when a particular outgoing port originates a session.

An example is Internet Relay Chat (IRC). Your computer connects to an IRC server at destination port 6667. The IRC server not only responds to your originating source port, but also sends an “identify” message to your computer on port 113. Using port triggering, you can tell the modem router, “When you initiate a session with destination port 6667, you must also allow incoming traffic on port 113 to reach the originating computer.” Using steps similar to the preceding example, the following sequence shows the effects of the port triggering rule you have defined:

1.You open an IRC client program to start a chat session on your computer.

2.Your IRC client composes a request message to an IRC server using a destination port number of 6667, the standard port number for an IRC server process. Your computer then sends this request message to your modem router.

3.Your modem router creates an entry in its internal session table describing this communication session between your computer and the IRC server. Your modem router

Advanced Settings

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NETGEAR DGN100Bv3 user manual Port Triggering to Open Incoming Ports, Destination port number

DGN100Bv3 specifications

The NETGEAR DGN100Bv3 is a versatile and feature-rich ADSL2+ modem router that is designed to cater to the needs of home users and small offices. By combining a high-performance modem and router in one compact device, it significantly simplifies the network setup, reducing the need for multiple devices and management points.

One of the standout features of the DGN100Bv3 is its ADSL2+ compatibility, allowing users to connect to various DSL internet service providers efficiently. This modem/router supports downstream rates of up to 24 Mbps and upstream rates of up to 1 Mbps, providing a robust solution for everyday browsing, streaming, and online gaming.

Equipped with 4 10/100 Ethernet ports, the DGN100Bv3 allows multiple devices to connect via wired connections, providing reliable and fast speeds for activities that demand stable internet access. Additionally, it features integrated wireless 802.11n technology, which enables users to create a secure Wi-Fi network with wireless speeds of up to 300 Mbps. This makes it ideal for multiple users who are streaming videos, engaging in video calls, or downloading large files simultaneously.

Security is also a key focus in the DGN100Bv3 design, offering comprehensive security features such as a robust firewall, WPA/WPA2 wireless security protocols, and support for Network Address Translation (NAT). This ensures that the network remains secure against external threats, giving users peace of mind.

Configuration and management of the DGN100Bv3 are straightforward, thanks to an intuitive web interface accessible via a browser. Users can easily set up parental controls, traffic prioritization, and network settings to optimize their experience. Additionally, the device supports Quality of Service (QoS), which helps manage bandwidth allocation for different applications, ensuring that critical services receive the necessary resources for optimal performance.

In summary, the NETGEAR DGN100Bv3 is a robust and efficient modem router that combines high-speed connectivity with ease of use, security, and management features. Its combination of ADSL2+ capabilities and wireless technology makes it a great choice for home users seeking reliable internet access and effective network management. Whether for casual browsing or demanding online activities, the DGN100Bv3 delivers a reliable and powerful solution suitable for diverse networking needs.