Section 3 - Configuration

Firewall Settings

A firewall protects your network from the outside world. The D-Link DIR-651 offers a firewall type functionality. The SPI feature helps prevent cyber attacks. Sometimes you may want a computer exposed to the outside world for certain types of applications. If you choose to expose a computer, you cam enable DMZ. DMZ is short for Demilitarized Zone. This option will expose the chosen computer completely to the outside world.

Enable SPI: SPI (Stateful Packet Inspection, also known as dynamic packet filtering) helps to prevent cyber attacks by tracking more state per session. It validates that the traffic passing through the session conforms to the protocol.

Note: When this option is enabled, hardware NAT will be disabled automatically.

NAT Endpoint Select one of the following for TCP and UDP ports: Filtering: Endpoint Independent - Any incoming traffic sent

to an open port will be forwarded to the application that opened the port. The port will close if idle for 5 minutes.

Address Restricted - Incoming traffic must match the IP address of the outgoing connection.

Address + Port Restriction - Incoming traffic must match the IP address and port of the outgoing connection.

Anti-Spoof Check: Enable this feature to protect your network from certain kinds of “spoofing” attacks.

Enable DMZ Host: If an application has trouble working from behind the router, you can expose one computer to the Internet and run the application on that computer.

Note: Placing a computer in the DMZ may expose that

computer to a variety of security risks. Use of this option is only recommended as a last resort.

DMZ IP Address: Specify the IP address of the computer on the LAN that you want to have unrestricted Internet communication. If this computer obtains it’s IP address automatically using DHCP, be sure to make a static reservation on the Basic > DHCP page so that the IP address of the DMZ machine does not change.

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D-Link DIR-651 manual Firewall Settings
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DIR-651 specifications

The D-Link DIR-651 is a versatile wireless router designed to offer a reliable and high-performance networking solution for home and small office environments. With its robust feature set, this device stands out as an excellent option for users seeking a seamless internet experience.

At the core of the DIR-651 is its dual-band capability, which operates on both the 2.4GHz and 5GHz frequency bands. This dual-band functionality allows users to optimize their wireless connections, reducing interference and ensuring smoother performance for bandwidth-intensive applications such as online gaming, HD streaming, and video conferencing. The router supports IEEE 802.11ac standards, delivering data transfer rates of up to 1200 Mbps.

One of the standout features of the DIR-651 is its internal antenna design, which enhances signal strength and coverage throughout your home or office. This enables users to enjoy stable connections even in large spaces, minimizing dead zones and ensuring that all devices connected to the network have reliable access to the internet.

The DIR-651 is equipped with multiple Fast Ethernet ports, allowing for wired connections to desktop computers, gaming consoles, and other devices. This is particularly beneficial for users who prioritize speed and stability over wireless connections for critical applications. Additionally, the router supports advanced Quality of Service (QoS) features, which allow users to prioritize bandwidth for specific applications, ensuring optimal performance for critical tasks.

Security is a top priority for the DIR-651, which comes with advanced security protocols including WPA/WPA2 encryption. This helps protect your network from unauthorized access and ensures that your connection remains secure. The router also features a built-in firewall and supports virtual private network (VPN) functionality, adding another layer of security for users concerned about online privacy.

Setup and management of the DIR-651 is user-friendly, thanks to its intuitive web interface and D-Link's DNS-based dynamic DNS service. The router can be configured easily via a web browser, and users can monitor their network traffic and manage connected devices with a few clicks.

Overall, the D-Link DIR-651 combines advanced technologies and features to provide users with a fast, reliable, and secure networking solution. Whether for streaming, gaming, or general web browsing, this router is designed to meet the demands of today's digital lifestyle, making it a valuable addition to any home or small office network.
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