N300 WiFi Router

Application Example: Port Triggering for Internet Relay Chat

Some application servers, such as FTP and IRC servers, send replies to multiple port numbers. Using port triggering, you can tell the router to open more incoming ports when a particular outgoing port starts 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 router, “When you initiate a session with destination port 6667, you must also allow incoming traffic on port 113 to reach the originating computer.” The following sequence shows the effects of this port triggering rule:

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 router.

3.Your router creates an entry in its internal session table describing this communication session between your computer and the IRC server. Your router stores the original information, performs Network Address Translation (NAT) on the source address and port, and sends this request message through the Internet to the IRC server.

4.Noting your port triggering rule and observing the destination port number of 6667, your router creates another session entry to send any incoming port 113 traffic to your computer.

5.The IRC server sends a return message to your router using the NAT-assigned source port (for example, port 33333) as the destination port and sends an “identify” message to your router with destination port 113.

6.When your router receives the incoming message to destination port 33333, it checks its session table to see if a session is active for port number 33333. Finding an active session, the router restores the original address information replaced by NAT and sends this reply message to your computer.

7.When your router receives the incoming message to destination port 113, it checks its session table and finds an active session for port 113 associated with your computer. The router replaces the message’s destination IP address with your computer’s IP address and forwards the message to your computer.

8.When you finish your chat session, your router eventually senses a period of inactivity in the communications and removes the session information from its session table, and incoming traffic is no longer accepted on port numbers 33333 or 113.

Specify Internet Port Settings

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NETGEAR WNR2000v5 user manual Application Example Port Triggering for Internet Relay Chat
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WNR2000v5 specifications

The NETGEAR WNR2000v5 is a versatile wireless router designed to provide reliable performance for home and small office networks. It operates on the 802.11n wireless standard, allowing users to experience fast and efficient internet connectivity. With a maximum data throughput of up to 300 Mbps, the WNR2000v5 is well-suited for streaming high-definition videos, online gaming, and browsing the web simultaneously across multiple devices.

One of the notable features of the WNR2000v5 is its advanced wireless technology, which includes the use of multiple antennas to enhance the range and quality of the wireless signal. This ensures that users can connect to the network from various locations within a home or office, reducing dead spots and providing a stable connection. The router supports both 2.4 GHz frequency bands, which offer improved coverage but may have lower speeds compared to the 5 GHz bands found in dual-band routers.

Security is a top priority for any home network, and the WNR2000v5 addresses this with robust encryption protocols such as WPA2. This safeguard protects personal data and sensitive information from unauthorized access. Additionally, the router offers a built-in firewall and a feature known as "Wi-Fi Protected Setup" to simplify the connection of compatible devices securely.

The WNR2000v5 is equipped with four Fast Ethernet ports, allowing users to connect wired devices directly for optimal performance. This is particularly beneficial for devices that require stable connections, such as gaming consoles or desktop computers. The USB port on the router enables users to connect external storage devices, facilitating easy access and file sharing across the network.

Setup and management of the WNR2000v5 are user-friendly, featuring a straightforward web interface that allows users to configure settings easily. The router supports Quality of Service (QoS) settings, enabling users to prioritize bandwidth for specific applications and devices. This feature is particularly useful in households where multiple users are online simultaneously, ensuring everyone enjoys a fast and stable internet experience.

In summary, the NETGEAR WNR2000v5 is a powerful and affordable solution for those seeking dependable wireless connectivity. With its combination of advanced wireless technology, strong security features, and easy management options, it serves as an excellent choice for enhancing home or small office networking needs. Whether streaming content, engaging in online gaming, or simply browsing the internet, this router delivers a reliable and efficient performance to meet the demands of modern users.
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