D-Link DIR-625 manual Application Level Gateway ALG Configuration

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Section 3 - Configuration

Application Level Gateway (ALG) 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 commonVPN Passthroughapplications are enabled by default.

RTSP

H.323

SIP (VoIP)

MMS

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

MSN Messenger: Allows all of the Windows/MSN Messenger functions to work properly through the router.

FTP: Allows FTP clients and servers to transfer data across NAT. Refer to the Advanced > Virtual Server page if you want to host an FTP server.

H.323 Allows Microsoft NetMeeting clients to communicate across NAT. Note that if you want your buddies to call you, you should (Netmeeting): also set up a virtual server for NetMeeting. Refer to the Advanced > Virtual Server page for information on how to set up

a virtual server.

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.

Wake-On-LAN:Allows Ethernet network adapters with Wake-On-LAN (WOL) to function.

MMS: Allows Windows Media Player, using MMS protocol, to receive streaming media from the Internet.

D-Link DIR-625 User Manual

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Contents Page Table of Contents Wireless Security Warranty RegistrationProductPackageOverviewContents Introduction Total PerformanceFeatures Hardware Overview ConnectionsLEDs Internet LEDInstallation Before you BeginWireless Installation Considerations Connect to Cable/DSL/Satellite Modem Connect to Another Router Installation Configuration Web-based Configuration UtilitySetup Wizard Click Launch Internet Connection Setup Wizard to beginConfiguration Configuration Configuration Manual Configuration Dynamic CableInternet Setup PPPoE DSLPptp Page L2TP Page Static assigned by ISP Big Pond Wireless Settings Visibility Status Network Settings Dhcp Server Settings Dhcp Reservation Virtual Server Configuration Port Forwarding Application Rules QoS Engine SpeedNetwork Filters Access Control Access Control Wizard Access Control Wizard Website Filters Inbound Filters Firewall Settings Application Level Gateway ALG Configuration Advanced Wireless Settings Transmit Power Set the transmit power of the antennasAdvanced Network Settings Administrator Settings Time Settings SysLog SysLog Server SysLog ServerEmail Settings Authentication authenticationSystem Settings Update Firmware Check Email Notification of Newer FirmwareDdns System Check Schedules Device Information Log Stats Active SessionsWireless SupportWireless Security What is WEP?What is WPA? Wireless Security Setup Wizard Security Security Configure WEP Configure WPA-Personal PSK Configure WPA-Enterprise Radius Security Connect to a Wireless Network Using Windows XPConfigure WEP Connecting to a Wireless Network Configure WPA-PSK Connecting to a Wireless Network Troubleshooting Why can’t I access the web-based configuration utility?What can I do if I forgot my password? Troubleshooting Troubleshooting Wireless Basics What is Wireless? Wireless Local Area Network WlanSmall Office and Home Office Wireless Personal Area Network WpanHome Centralize your router or Access Point Eliminate InterferenceWireless Modes SecurityNetworking Basics Check your IP addressStep Step Highlight Internet Protocol TCP/IP and click PropertiesTechnical Specifications MSC DimensionsContacting Technical Support Phone SupportWarranty Limited WarrantyLimited Software Warranty Non-Applicability of WarrantyWhat Is Not Covered Disclaimer of Other WarrantiesLimitation of Liability Governing LawTrademarks Copyright StatementFCC Caution CE Mark WarningFCC Statement IC statement IC Radiation Exposure StatementRegistration