D-Link DIR-651 manual Application Level Gateway Configuration

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Section 3 - Configuration

Application Level Gateway Configuration

Here you can enable or disable ALG’s. Some protocols and applications require special handling of the IP payload to make them work with network address translation (NAT). Each ALG provides special handling for a specific protocol or application. A number of ALGs for common applications are enabled by default.

PPTP: Allows multiple machines on the LAN to connect to their corporate network using PPTP protocol.

L2TP: Allows multiple machines on the LAN to connect to their corporate network using L2TP protocol.

IPSEC (VPN): Allows multiple VPN clients to connect to their corporate network using IPSec. Some VPN clients support traversal of IPSec through NAT. This ALG may interfere with the operation of such VPN clients. If you are having trouble connecting with your corporate network, try turning this ALG off. Please check with the system adminstrator of your corporate network whether your VPN client supports NAT traversal.

RTSP: Allows applications that use Real Time Streaming Protocol to receive streaming media from the internet. QuickTime and Real Player are some of the common applications using this protocol.

SIP: Allows devices and applications using VoIP (Voice over IP) to communicate across NAT. Some VoIP applications and devices have the ability to discover NAT devices and work around them. This ALG may interfere with the operation of such devices. If you are having trouble making VoIP calls, try turning this ALG off.

D-Link DIR-651 User Manual

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Contents Page Trademarks PrefaceManual Revisions Revision Date DescriptionTable of Contents Wireless Basics Wireless SecurityConnect to a Wireless Network Warranty RegistrationProductPackageOverviewContents System Requirements Computer with the followingBrowser Requirements Introduction Total PerformanceFeatures Hardware Overview ConnectionsLEDs Installation Before you BeginWireless Installation Considerations Getting Started Configuration Web-based Configuration UtilitySetup Wizard Click Launch Internet Connection Setup Wizard to beginConfiguration Configuration Configuration Manual Configuration Server Host NamePrimary MAC AddressInternet Setup PPPoE DSLReconnect Mode Select either Always-on,On-Demand, or Manual PptpL2TP MaskStatic assigned by ISP Wireless Settings Wireless Channel Mode Channel WidthSchedule Network Settings NetBIOS Mode Enable DhcpNetBIOS From WANDhcp Reservation ClientsVirtual Server Schedules section Port Forwarding Application Rules QoS Engine SpeedPage Network Filters Access Control Access Control WizardPage Page Configure Website Select Allow or Deny Filter Below Website FilterInbound Filter Action Select Allow or DenyFirewall Settings Application Level Gateway Configuration Routing Advanced Wireless Settings Transmit Power Set the transmit power of the antennasWi-Fi Protected Setup WPS Enable Enable the Wi-Fi Protected Setup featureAdvanced Network Settings Guest Zone Administrator Settings Time Settings Time Zone Select the Time Zone from the drop-down menuSysLog Check this box to send the router logs to a SysLog ServerEmail Settings Authentication authenticationSystem Settings Update Firmware Language PackDdns System Check Schedules Wireless LAN Device InformationLog RefreshSave Log Stats Internet Sessions Wireless Support Wireless Security What is WPA?Wireless Security Setup Wizard Wireless Security Setup WizardPage Configure WPA-Personal PSK Configure WPA-Enterprise Radius Page Connect to a Wireless Network WindowsPage Page Windows Vista Configure Wireless Security Page Windows XP Configure WPA-PSK Page Troubleshooting Why can’t I access the web-based configuration utility?What can I do if I forgot my password? Troubleshooting Page Wireless Basics What is Wireless?Why D-Link Wireless? Wireless Personal Area Network Wpan How does wireless work?Wireless Local Area Network Wlan Who uses wireless?Tips Where is wireless used?Centralize your router or Access Point Eliminate InterferenceWireless Modes Networking Basics Check your IP addressStatically Assign an IP address StepTechnical Specifications Contacting Technical Support Http//support.dlink.com Http//support.dlink.caWarranty Limited WarrantyLimited Software Warranty Non-Applicability of WarrantySubmitting a Claim What Is Not Covered Disclaimer of Other WarrantiesTrademarks Limitation of LiabilityGoverning Law Copyright StatementFCC Statement FCC CautionFCC Radiation Exposure Statement Industry Canada Statement Radiation Exposure StatementRegistration

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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