NETGEAR DG834GUV5 user manual Services, Order of Precedence for Rules

Page 50

DG834GUv5 Wireless Router with Built-in DSL Modem User Manual

Order of Precedence for Rules

As you define new rules, they are added to the tables in the Firewall Rules screen, as shown:

Figure 3-7

For any traffic attempting to pass through the firewall, the packet information is subjected to the rules in the order shown in the rules table, beginning at the top and proceeding to the default rules at the bottom. In some cases, the order of precedence of two or more rules might be important in determining the disposition of a packet. The Move button allows you to relocate a defined rule to a new position in the table.

Services

Services are functions performed by server computers at the request of client computers. For example, Web servers serve Web pages, time servers serve time and date information, and game hosts serve data about other players’ moves. When a computer on the Internet sends a request for service to a server computer, the requested service is identified by a service or port number. This number appears as the destination port number in the transmitted IP packets. For example, a packet that is sent with destination port number 80 is an HTTP (Web server) request.

The service numbers for many common protocols are defined by the Internet Engineering Task Force (IETF) and published in RFC 1700, “Assigned Numbers.” Service numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of the application.

Although the modem router already holds a list of many service port numbers, you are not limited to these choices. Use the following procedure to define your own services.

3-10

Protecting Your Network

v1.0, May 2009

Image 50
Contents NETGEAR, Inc Statement of Conditions FCC StatementTrademarks European Union Statement of Compliance Bestätigung des Herstellers/Importeurs 1999/5/EGCustomer Support Certificate of the Manufacturer/ImporterVoluntary Control Council for Interference Vcci Statement V1.0, May Contents Chapter Protecting Your Network Chapter Configuring Telkom VPN Lite V1.0, May About This Manual Conventions, Formats, and ScopePrinting a page in the Html view How to Use This ManualHow to Print this Manual Printing a chapterPrinting the full manual Xiv Chapter Configuring Your Internet Connection What You Need Before You BeginUsing the Installation CD to Set Up Your Router Logging In to the Modem RouterViewing or Manually Configuring Your ISP Settings ISP does not require login Basic Settings Fields Description Settings DescriptionGet Automatically from ISP. Your ISP uses Dhcp to Changing Your Adsl Settings Want to useHow the Internet Connection Works Chapter Configuring Your Wireless Network Security Settings Planning Your Wireless NetworkWireless Placement and Range Guidelines See Manually Configuring Your Wireless Network onWireless Security Options Manually Configuring Your Wireless Network V1.0, May Wireless Settings SsidConfiguring Your Wireless Security Wireless SecurityConfiguring WEP Configuring WPA, WPA2, or WPA/WPA2 Using Push N Connect WPS to Configure Your Wireless Network Using a WPS Button to Add a WPS Client Using PIN Entry to Add a WPS Client V1.0, May V1.0, May Advanced Wireless Settings for WPS and WDS Hiding your wireless network name Ssid Controlling Wireless Station AccessTurning off wireless connectivity completely Restricting Access by MAC Address V1.0, May Chapter Protecting Your Network Protecting Access to Your ADSL2+ Modem Wireless RouterChanging the Built-In Password Configuring Basic Firewall Services Changing the Administrator Login Time-outBlocking Keywords, Sites, and Services Blocking Keywords and SitesKeyword Result Firewall Rules Inbound Rules Port Forwarding Inbound Rule Example a Local Public Web ServerInbound Rule Example Allowing Videoconferencing Outbound Rule Example Blocking Instant Messenger Outbound Rules Service BlockingConsiderations for Inbound Rules V1.0, May Services Order of Precedence for RulesSetting Times and Scheduling Firewall Services V1.0, May Scheduling Firewall Services V1.0, May Chapter Managing Your Network Backing Up, Restoring, or Erasing Your SettingsBacking Up the Configuration to a File Upgrading the Modem Router Firmware Restoring the Configuration from a FileErasing the Configuration V1.0, May Modem Router Status Fields Network Management InformationViewing Modem Router Status and Usage Statistics DNS Viewing Statistics Viewing Connection Status Router Statistics FieldsViewing Attached Devices Connection Status Fields for PPPoAViewing, Selecting, and Saving Logged Information Security Log Entry DescriptionsLog Action Buttons Selecting Which Information to LogSaving Log Files on a Server Dropped Packets Activation and AdministrationLog Message Examples Enabling Security Event E-mail Notification Send alerts and logs via emailRunning Diagnostic Utilities and Rebooting the Modem Router Configuring Remote Management Enabling Remote ManagementSelect the Turn Remote Management On check box Http//134.177.0.1238080 Chapter Advanced Configuration Modifying Your WAN SetupWAN Setup Settings Setting DescriptionSetting Up a Default DMZ Server Configuring Your LAN IP Settings LAN IP Setup LAN TCP/IPUsing the Modem Router as a Dhcp Server Use Router as Dhcp ServerDefining Reserved IP Addresses Click Edit or DeleteConfiguring Dynamic DNS Static Route Example Using Static RoutesSelect the Use a Dynamic DNS Service check box Configuring Static Routes Configuring Universal Plug and Play UPnP V1.0, May Configuring Wireless Bridging and Repeating WDS Point-to-Point Bridge Configuration Multi-Point Bridge Configuration V1.0, May Repeater with Wireless Client Association V1.0, May Configuring VPN Lite Chapter Configuring Telkom VPN LiteWhat is VPN Lite? V1.0, May V1.0, May V1.0, May Chapter Troubleshooting Basic FunctioningPower LED Is Red Troubleshooting Access to the Modem Router Main MenuPower LED Is Not On LAN or DSL or Internet Port LEDs Are Not OnTroubleshooting the ISP Connection Adsl LinkDSL LED Is Off DSL LED Is Solid GreenDSL LED Is Blinking Obtaining a WAN IP Address Click Connection Status Troubleshooting PPPoE or PPPoATroubleshooting Internet Browsing Troubleshooting a TCP/IP Network Using the Ping Utility Testing the LAN Path to Your RouterRestoring the Default Configuration and Password Testing the Path from Your Computer to a Remote DeviceProblems with Date and Time V1.0, May Chapter Connecting a USB Drive to the Router File Sharing ScenariosSharing Photos with Friends and Family Sharing photos with friends and familyStoring Files in a Central Location for Playing or Printing Storing files in a central location for printingUnderstanding the USB Configuration Settings Sharing Large Files with ColleaguesNetwork Access FTP AccessConnecting a USB Drive to the DG834GUv5 Attached DeviceUSB Drive Requirements Select the folder to share Using the USB Drive Menu to Grant FTP Access Rights Granting Users Access to the USB DriveGranting an account access to the USB Device Unmounting a USB Drive\\10.0.0.2 Understanding the USB Drive Access MethodsConnecting to the USB Drive from a Local Web Browser \\10.0.0.2\share\partition1Locating the Internet Port IP Address Connecting to the USB Drive from a Remote ComputerAccessing the Router’s USB Drive Remotely Using FTP Configuring Windows 2000 and Windows XP Connecting to the USB Drive From Your Home/Office NetworkConfiguring Windows 98SE and Windows ME Enabling File and Printer SharingAccessing the USB Drive from My Network Places Accessing the USB Drive from the Windows Start MenuAccessing the USB Drive from Windows Explorer \\ipaddressAppendix a Technical Specifications Network Protocol and Standards CompatibilityV1.0, May AppendixB Related Documents Document LinkV1.0, May