NETGEAR WNDR3700V4 user manual How Port Forwarding Differs from Port Triggering

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N600 Wireless Dual Band Gigabit Router WNDR3700v4

Internet to initiate a connection to a server computer on your network. Normally, your router ignores any inbound traffic that is not a response to your own outbound traffic. You can configure exceptions to this default rule by using the port forwarding feature.

A typical application of port forwarding can be shown by reversing the client-server relationship from the previous web server example. In this case, a remote computer’s browser needs to access a web server running on a computer in your local network. Using port forwarding, you can tell the router, “When you receive incoming traffic on port 80 (the standard port number for a web server process), forward it to the local computer at 192.168.1.123.” The following sequence shows the effects of the port forwarding rule you have defined:

1.The user of a remote computer opens a browser and requests a web page from www.example.com, which resolves to the public IP address of your router. The remote computer composes a web page request message with the following destination information:

Destination address. The IP address of www.example.com, which is the address of your router.

Destination port number. 80, which is the standard port number for a web server process.

The remote computer then sends this request message through the Internet to your router.

2.Your router receives the request message and looks in its rules table for any rules covering the disposition of incoming port 80 traffic. Your port forwarding rule specifies that incoming port 80 traffic should be forwarded to local IP address 192.168.1.123. Therefore, your router modifies the destination information in the request message:

The destination address is replaced with 192.168.1.123.

Your router then sends this request message to your local network.

3.Your web server at 192.168.1.123 receives the request and composes a return message with the requested web page data. Your web server then sends this reply message to your router.

4.Your router performs NAT on the source IP address, and sends this request message through the Internet to the remote computer, which displays the web page from www.example.com.

To configure port forwarding, you need to know which inbound ports the application needs. Usually, you can determine this information by contacting the publisher of the application or the relevant user groups or news groups.

How Port Forwarding Differs from Port Triggering

The following points summarize the differences between port forwarding and port triggering:

•Port triggering can be used by any computer on your network, although only one computer can use it at a time.

•Port forwarding is configured for a single computer on your network.

Advanced Settings

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Contents October 2013 East Plumeria Drive San Jose, CA N600 Wireless Dual Band Gigabit Router WNDR3700v4Support Contents Netgear genie Advanced Home Advanced Settings Appendix a Supplemental Information Getting to know your router Hardware SetupFront Panel Hardware FeaturesUnpack Your Router Icon Description Label Back PanelPosition Your Router Attach the StandCable Your Router Verify the Cabling N600 Wireless Dual Band Gigabit Router WNDR3700v4 Getting Started with Netgear Genie Connecting the routerUse Standard TCP/IP Properties for Dhcp Router Setup PreparationTypes of Logins and Access Wireless Devices and Security SettingsUpgrade the Firmware Use Netgear genie after InstallationBasic Home screen with dashboard, language, and online help Dashboard Basic Home ScreenManual Method Join Your Wireless NetworkWi-Fi Protected Setup WPS Method  To use WPS to join the wireless networkNetgear genie App and Mobile genie App Your Internet connection and network Netgear genie Basic SettingsBasic Home Screen Internet Setup To view or change the basic Internet setup Internet IP Address Internet Setup Screen FieldsDoes Your ISP Require a Login? Answer either yes or no  To go to the Attached Devices screen Attached DevicesParental Controls  To set up Live Parental ControlsN600 Wireless Dual Band Gigabit Router WNDR3700v4 Click the Take me to the status screen button ReadySHARE Storage To view or change basic wireless settings Basic Wireless SettingsRegion Selection Wireless Settings Screen FieldsWireless Network 2.4 GHz b/g/n and 5 GHz  To change the WPA settings Change WPA Security Option and PasswordSecurity Options Settings Guest Networks  To set up a guest network Select Basic Guest NetworkWPA Encryption Guest Network Wireless Security OptionsNetgear genie Advanced Home Specify custom settingsNetgear genie Advanced Home Screen Setup Wizard To use the Setup Wizard Select either Push Button or PIN Number WPS Wizard To use the WPS Wizard Select Advanced WPS Wizard Setup Menu WAN Setup  To set up a default DMZ server Default DMZ ServerCommon MTU sizes Change the MTU Size To change the LAN settings LAN Setup To change the MTU size Select Advanced Setup WAN Setup Use Router as a Dhcp Server LAN Setup Screen SettingsLAN TCP/IP Setup Address Reservation Use the Router as a Dhcp ServerAddress Reservation  To reserve an IP address Quality of Service QoS SetupEnable WMM QoS for Wireless Multimedia Applications  To configure QoS To create a QoS policy for applications and online games Set Up QoS for Internet AccessQoS for Applications and Online Gaming Click the Add Priority Rule button Select the Turn Internet Access QoS On check boxQoS for a Router LAN Port Click Add Priority Rule  To edit or delete a QoS policy Select Advanced QoS SetupQoS for a MAC Address Edit or Delete an Existing QoS PolicyStorage Accessing and configuring a USB storageShare Photos ReadySHARE Access To access the USB device from Windows File-Sharing Scenarios To share files with your friends and family Store Files in a Central Location for PrintingShare Large Files over the Internet  To access your USB device Storage Basic Settings To go to Storage Basic Settings Select Basic ReadySHARE Select Basic ReadySHARE, and click Edit Add or Edit a Network Folder To go to USB Storage Advanced Settings Storage Advanced SettingsAvailable Network Folders Safely Remove a USB DriveMedia Server Select the Allow only approved devices check box Specify Approved USB DevicesFtp//10.1.65.4 Access the Router USB Drive Remotely Using FTP To connect to the router’s USB drive using a web browser Connect to the USB Drive from a Remote ComputerSecurity Keep unwanted content out of your network To specify a trusted computer Keyword Blocking of Http TrafficSelect Advanced Security Block Sites  To delete a keyword or domain To block services Select Advanced Security Block Services Block Services Port FilteringN600 Wireless Dual Band Gigabit Router WNDR3700v4  To schedule blocking Schedule BlockingSecurity Event Email Notifications Manage your network Administration To check for new firmware and update your router LAN Port View Router StatusRouter Information Hardware Version. The router modelShow Statistics Button Internet PortView connection status information Connection Status ButtonWireless Settings 2.4 GHz and 5 GHz View Logs of Web Access or Attempted Web Access Erase Manage the Configuration FileBack Up Settings Restore Configuration SettingsPassword Recovery Set PasswordCustomize your network Advanced SettingsAdvanced Wireless Settings  To restrict access based on MAC addresses Restrict Wireless Access by MAC AddressSelect the Turn Access Control On check box Wireless APSelect the Enable Access Point Mode check box Wireless Repeating Function WDSWireless repeating scenario Following settings are available  To view or change the Wireless Repeating Function settings To set up the base station Set Up the Base Station To configure the router as a repeater unit Set Up a Repeater UnitPort Forwarding and Port Triggering Remote Computer Access BasicsDestination port number Port Triggering to Open Incoming PortsPort Forwarding to Permit External Host Communications How Port Forwarding Differs from Port Triggering  To set up port forwarding Set Up Port Forwarding to Local Servers To edit or delete a port forwarding entry Add a Custom ServiceEdit or Delete a Port Forwarding Entry  To make a local web server public Set Up Port TriggeringClick Edit Service or Delete Service Application Example Making a Local Web Server PublicN600 Wireless Dual Band Gigabit Router WNDR3700v4 Dynamic DNS  To set up Dynamic DNSSelect the Use a Dynamic DNS Service check box Static Routes  To set up a static route Remote Management  To turn on Universal Plug and Play USB SettingsUniversal Plug and Play IPv6  To set up an IPv6 Internet connection typeIPv6 Filtering IPv6 LAN SetupAuto Detect Fields Auto Config Pass Through 6to4 TunnelFixed IPv6 Fixed WAN SetupIPb6 Fixed LAN Setup Dhcp PPPoE Traffic Meter Troubleshooting Quick Tips LEDs Never Turn Off Power LED Is Off or BlinkingTroubleshoot with the LEDs Internet LED Is Off Wireless 2.4 GHz and 5 GHz LEDs Are OffCannot Log In to the Router Cannot Access the Internet Incorrect Date or Time Wireless ConnectivityChanges Not Saved Wireless Signal Strength Supplemental Information Factory default settings Factory SettingsWPA2-PSK AES Technical Specifications111 Notification of Compliance Netgear Dual Band WirelessFCC Caution Avertissement Important Note Radiation Exposure Statement
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