D-Link DIR-657 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.

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-657 User Manual

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Contents Page Preface Revision Date DescriptionInitial release Table of Contents Wireless Security TroubleshootingWireless Basics 113 111ProductPackageOverviewContents System Requirements Computer with the followingBrowser Requirements Total Performance IntroductionFeatures Other Features Include Connections Hardware OverviewFront View LEDs Before you Begin InstallationWireless Installation Considerations Getting Started Web-based Configuration Utility ConfigurationClick Wireless Connection Setup Wizard to begin. Skip to Setup WizardPage Page Page MAC Address Manual ConfigurationDynamic Cable My Internet Connection Host Name Use UnicastingPPPoE DSL Internet SetupPptp Reconnect Mode Select either Always-on,On-Demand, or ManualDNS Servers Address ModeUsername Password Reconnect Mode AddressStatic assigned by ISP Schedule Wireless SettingsIP Address Subnet Mask Network SettingsNetBIOS Scope Dhcp Server SettingsDynamic Dhcp IP addresses Clients Dhcp ReservationMedia Server IPv6 Internet Connection Auto Detection IPv6 Manual SetupStatic IPv6 Stateful Autoconfiguration Type Select Stateful DHCPv6My IPv6 Connection WAN IPv6 Address Settings Static IPv6 StatelessSelect either Slaac + Rdnss or Slaac + Stateless DHCPv6 My IPv6 Connection IPv6 DNS Settings Autoconfiguration StatefulAutoconfiguration Stateless PPPoE Stateful Autoconfiguration Type Select Stateful DHCPv6 PPPoE Stateless Configuration IPv6 in IPv4 Tunneling Stateful IPv6 in IPv4 Tunneling Stateless To 4 Tunneling Stateful Enter the primary and secondary DNS server addressesEnter the IPv6 Address Lifetime in minutes Lifetime To 4 Tunneling StatelessLifetime minutes 6rd Stateless6rd Stateful Link-Local Connectivity Parental Controls Virtual Server Inbound Filter Schedule Name IP AddressTCP/UDP Port ForwardingApplication Rules Name TriggerFirewall Automatic Classification Dynamic Fragmentation Enable Traffic ShapingQoS Engine Manual Uplink SpeedConfiguration MAC Address Dhcp Client Clear Network FiltersAccess Control Wizard Access ControlPage Page Website Filters Configure Website Select Allow or Deny Filter BelowAction Select Allow or Deny Inbound FiltersFirewall Settings Application Level Gateway Configuration Routing Advanced Wireless Settings Wish Settings Enable WishAutomatic Wish Rules Device Wizard Wi-Fi Protected Setup WPSPIN Settings Current PIN Reset PIN to Default Add Wireless StationAdvanced Network Settings Between Zones zones created Guest ZoneIPv6 Firewall IPv6 Routing Server Administrator SettingsTime Settings SysLog Notification Email SettingsSystem Settings Load Settings from Local Hard DriveReboot Device Update Firmware Ddns System Check Schedules Wireless LAN Device InformationGeneral Log What to View View LevelsClear Email Now Save Log Active Sessions StatsWireless IPv6 Support What is WPA? Wireless SecurityWi-PnP Wireless Setup Page Wireless Security Setup Wizard Wireless Security Setup WizardPage Configure WPA-Personal PSK Configure WPA-Enterprise Radius Page Using Windows 7 and WPS for Wireless Configuration Security Double-click the DIR-657 router Page Page Using Windows Connect to a Wireless NetworkPage Page Using Windows Vista Configure Wireless Security Page Using Windows XP Configure WPA-PSK Page Why can’t I access the web-based configuration utility? TroubleshootingWhat can I do if I forgot my password? Ping url -f -l MTU value Page What is Wireless? Wireless BasicsSmall Office and Home Office HomeCentralize your router or Access Point Eliminate InterferenceSecurity Wireless Modes Check your IP address Networking BasicsStep Highlight Internet Protocol TCP/IP and click Properties StepTechnical Specifications FCC Caution TrademarksFCC Radiation Exposure Statement Industry Canada StatementRadiation Exposure Statement