NETGEAR JNR1010 manual Port Forwarding to Permit External Host Communications

Page 71

N150 4-Port Wireless Router JNR1010

6.Upon receiving the incoming message to destination port 33333, your router checks its session table to determine whether there is an active session for port number 33333. Finding an active session, the router restores the original address information replaced by NAT and sends this reply message to your computer.

7.Upon receiving the incoming message to destination port 113, your router checks its session table and learns that there is an active session for port 113, associated with your computer. The router replaces the message’s destination IP address with your computer’s IP address and forwards the message to your computer.

8.When you finish your chat session, your router eventually senses a period of inactivity in the communications. The router then removes the session information from its session table, and incoming traffic is no longer accepted on port numbers 33333 or 113.

To configure port triggering, you need to know which inbound ports the application needs. Also, you need to know the number of the outbound port that will trigger the opening of the inbound ports. You can usually determine this information by contacting the publisher of the application or user groups or newsgroups.

Note: Only one computer at a time can use the triggered application.

Port Forwarding to Permit External Host Communications

In both of the preceding examples, your computer initiates an application session with a server computer on the Internet. However, you might need to allow a client computer on the 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 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.

Advanced Settings

71

Page 70 Page 72
Image 71
Page 70 Page 72
Contents N150 4-Port Wireless Router JNR1010 Statement of Conditions Technical SupportTrademarks Contents Security Appendix B Notification of Compliance Index Getting to know your router Hardware SetupPosition Your Router Unpack Your RouterFront Panel Hardware FeaturesLED Side PanelLabel Back PanelGetting Started with Netgear genie Connecting to the routerGather ISP Information Router Setup PreparationWireless Devices and Security Settings Use Standard TCP/IP Properties for Dhcp To use Netgear genie to set up your router Types of LoginsNetgear genie Setup  To troubleshoot Internet access problems Use Netgear genie After InstallationRouter Dashboard Basic Home Screen Upgrade Router FirmwareWPS Method Join Your Wireless Network To use WPS to join the wireless network  To connect manually Netgear genie App and Mobile genie AppManual Method N150 4-Port Wireless Router JNR1010 Your Internet connection and network Genie Basic SettingsInternet Setup Does Your ISP Require a Login? Answer either yes or no Internet Setup Screen FieldsAttached Devices Parental Controls  To set up Live Parental ControlsN150 4-Port Wireless Router JNR1010 Click the Take me to the status screen button Basic Wireless Settings To view or change basic wireless settings Wireless Settings Screen Fields To change WPA Security Option and Passphrase ModeGuest Networks  To set up a guest networkFastLane Guest Network Wireless Security Options To set up the FastLane feature Genie Advanced Home Specifying custom settingsSelect Setup Wizard Setup Wizard To use the setup wizard again  To use the WPS Wizard Select Advanced WPS Wizard WPS WizardWAN Setup Setup MenuDefault DMZ Server Change the MTU Size  To set up a default DMZ serverLAN IP address LAN Setup To change the MTU size Select Advanced Setup WAN Setup LAN TCP/IP Setup LAN Setup Screen Settings To change the LAN settings Use the Router as a Dhcp Server  To reserve an IP address Address ReservationEnable WMM QoS for Wireless Multimedia Applications Quality of Service QoS Setup To create a QoS policy for applications and online games Set Up QoS for Applications and Online GamingClick the Add Priority Rule button Set up QoS for a Router LAN PortClick Add Priority Rule Set up QoS for a MAC Address To edit or delete a QoS policy Edit or Delete an Existing QoS PolicySecurity Keeping unwanted content out of your network To specify a trusted computer Keyword Blocking of Http Traffic To delete a keyword or domain  To block services Block Services Port FilteringUser Defined  To schedule blocking Schedule BlockingSecurity Event Email Notifications  To set up email notificationsManaging your network Administration To check for new firmware and update your router Upgrade the Router FirmwareRouter Status View Router StatusInternet Port N150 4-Port Wireless Router JNR1010 Wireless AP  To view web access logs View Logs of Web Access or Attempted Web Access To restore configuration settings that you backed up Manage the Configuration FileBack Up Settings Restore Configuration SettingsErase Set PasswordAdvanced Settings  To configure advanced wireless settings Advanced Wireless SettingsRestrict Wireless Access by MAC Address Select the Turn Access Control On check box Wireless Repeating Function WDSRepeater access point Base station access point Wireless Repeating Function  To set up the base station Set Up the Base StationPort Forwarding and Triggering Set Up a Repeater Unit To configure the router as a repeater unit Destination port number Remote Computer Access BasicsPort Triggering to Open Incoming Ports Port Forwarding to Permit External Host Communications How Port Forwarding Differs from Port Triggering  To set up port forwarding Set Up Port Forwarding to Local ServersAdd a Custom Service  To edit or delete a port forwarding entry Set Up Port TriggeringClick Edit Service or Delete Service Edit or Delete a Port Forwarding EntryUniversal Plug and Play on Dynamic DNS Select the Use a Dynamic DNS Service check box  To set up Dynamic DNSStatic Routes  To set up a static routeRemote Management Universal Plug and Play  To enable Universal Plug and Play Traffic Meter Troubleshooting Sequence to Restart Your Network Wireless SettingsNetwork Settings Quick TipsInternet or Ethernet Port LEDs Are Off Troubleshooting with the LEDsPower LED Is Off or Blinking Cannot Log In to the Router Wireless LED Is OffYour Router Cannot Obtain an IP Address from the ISP Cannot Access the Internet To troubleshoot a PPPoE connection Troubleshooting PPPoESelect Administration Router Status Click Connection Status Changes Not Saved Troubleshooting Internet BrowsingWireless Signal Strength Wireless ConnectivityRestore the Factory Settings and Password  To ping the router from a Windows computer Troubleshoot Your Network Using the Ping UtilityTest the LAN Path to Your Router  To test the path from a Windows computer Test the Path from Your Computer to a Remote DeviceSupplemental Information Factory SettingsWPA2-PSK AES Technical SpecificationsSupplemental Information Notification of Compliance Netgear Wireless Routers, Gateways, APsNotification of Compliance Interference Reduction Table 100 Index101 102 103
Top Page Image Contents