Gateway CG3000D-1CXNAS user manual Port Triggering, Considerations for Port Forwarding

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Wireless Cable Gateway CG3000D-1CXNAS

Considerations for Port Forwarding

•If the IP address of the local server PC is assigned by DHCP, it might change when the PC is rebooted. To avoid this, you can assign a static IP address to your server outside the range that is assigned by DHCP, but in the same subnet as your LAN. By default, the IP addresses fromf 192.168.0.2 through 192.168.0.9 are reserved for this purpose.

•Local PCs must access the local server using the PCs’ local LAN address (192.168.0.XXX, by default). Attempts by local PCs to access the server using the external WAN IP address will fail.

•Port forwarding opens holes in your firewall. Only enable ports that are necessary.

Port Triggering

Port triggering is an advanced feature that you can use to allow gaming and other Internet applications that would otherwise be blocked by the firewall. You must know the port numbers that are used by the application. Port triggering operates as follows:

1.A computer makes an outgoing connection using a port number defined in the Port Triggering table.

2.The gateway records this connection, opens the incoming port or ports associated with this entry in the Port Triggering List, and associates them with the PC.

3.The remote system receives the PCs request, and responds using a different port number.

4.The gateway matches the response to the previous request, and forwards the response to the PC. (Without port triggering, this response would be treated as a new connection request rather than a response. As such, it would be handled in accordance with the port forwarding rules.)

Note: Only one computer at a time can use port triggering. After a computer finishes using a port triggering application, there is a short time-out period before the application can be used by another PC.

To configure port triggering:

1.In the main menu, under Advanced, select Port Triggering.

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Contents CG3000D-1CXNAS Technical Support NETGEAR, Inc Table of Contents Troubleshooting Connecting to the Internet Description Gateway Front PanelButton Description Logging Into Your Gateway Gateway Rear PanelGateway Status screen To log in to the gatewayTo view or configure the basic settings Viewing the Basic SettingsSetting Up Your Wireless Network Wireless ConfigurationWPA or WPA2 Wireless Security Manually Configuring Wireless SettingsTo view or configure the wireless settings WEP Security To set up WPA or WPA2 wireless securityTo set up WEP wireless security Using Push N Connect WPS Wireless SetupTo use the WPS button Using the WPS ButtonUsing a PIN To set up Wi-Fi Multimedia Wi-Fi MultimediaAdvanced Wireless Settings Description Advanced Wireless SettingsAccess Control by MAC Address Start Configure ButtonTo control access based on MAC addresses Wireless Cable Gateway CG3000D-1CXNAS Managing Your Network Modem Status Field Description Viewing the Gateway StatusViewing the Connection Status Changing PasswordsTo change the password Backing Up and Restoring Your SettingsTo save or restore the backup settings To see the event log Viewing the Event LogTo use diagnostics Running the Diagnostic Ping UtilityAdvanced Settings To stop blocking a computer MAC FilteringIP Filtering To set up IP filteringPort Blocking Port Forwarding Port Triggering To configure port triggeringConsiderations for Port Forwarding DMZ Host To set up a DMZ hostTo configure LAN IP settings LAN IP SetupReserving an IP Address for Dhcp Use Remote ManagementTo reserve an IP address for Dhcp Remote Management Description Settings To configure the gateway for remote managementTo configure UPnP Configuring Universal Plug and Play UPnPWireless Cable Gateway CG3000D-1CXNAS Basic Functions TroubleshootingUsing LEDs to Troubleshoot Connecting to the Gateway’s Main MenuLED Behavior Action Troubleshooting a TCP/IP Network Using a Ping Utility Troubleshooting the ISP ConnectionTesting the Path from Your PC to a Remote Device Testing the LAN Path to Your GatewayWireless Performance and Gateway Location Factory Default Settings Factory Default SettingsDefault WPA/WPA2 passphrase is Technical Specifications Technical SpecificationsDocument Link Related DocumentsNotification of Compliance Europe EU Declaration of Conformity FCC Requirements for Operation in the United States TBD Index Index

CG3000D-1CXNAS specifications

The Gateway CG3000D-1CXNAS is a versatile modem and router designed to provide high-speed internet connectivity to homes and small businesses. This device stands out due to its combination of advanced features, robust performance, and user-friendly design.

One of the primary features of the CG3000D-1CXNAS is its DOCSIS 3.0 technology. This enables the modem to support high-speed data transfer rates, making it ideal for today’s streaming-heavy lifestyles. With download speeds that can reach up to 1 Gbps, users can enjoy uninterrupted video streaming, online gaming, and fast file downloads.

The CG3000D-1CXNAS also includes a built-in dual-band wireless router, which allows it to operate on both the 2.4 GHz and 5 GHz bands. This dual-band capability ensures that it can accommodate multiple devices, providing a stable connection while optimizing speeds for various activities. The 2.4 GHz band is perfect for longer ranges and devices that require longer battery life, while the 5 GHz band offers faster data rates for activities like HD streaming and online gaming.

Moreover, this model features four Gigabit Ethernet ports, providing options for wired connections to devices such as computers, gaming consoles, and smart TVs. Gigabit Ethernet ensures that users get the fastest wired connection possible, which is especially important for high-bandwidth activities.

Security is another essential aspect of the Gateway CG3000D-1CXNAS. It includes built-in firewall protection, which helps safeguard the network against unauthorized access. Additionally, the router supports WPA/WPA2 encryption protocols to ensure that wireless connections are secure.

The user interface of the CG3000D-1CXNAS is straightforward, allowing users to easily manage their network settings. The device offers the capability to configure various network options such as parental controls, guest networks, and bandwidth prioritization, making it easy to tailor the network to individual needs.

In summary, the Gateway CG3000D-1CXNAS is a high-performance modem and router that combines advanced networking technologies with user-friendly features. Its DOCSIS 3.0 capabilities, dual-band wireless support, multiple Ethernet ports, and robust security measures make it an excellent choice for anyone looking to enhance their internet experience. Whether for work or leisure, this device provides the speed, reliability, and security necessary for today’s connected world.
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