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Equipamento de rede - WNR1000v1 (306.74 kb)
Equipamento de rede - WNR1000v1 (371.23 kb)
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7. Click Apply. The service appears in the list in the Port Forwarding/Port Triggering screen. Editing or Deleting a Port Forwarding Entry To edit or delete a port forwarding entry: 1. In the table, select the button next to the service name. Figure 5-3 Fine-Tuning Your Network v1.0, January 2009 N150 Wireless Router WNR1000 User Manual 2. Click Edit Service or Delete Service to make changes. 3. Click Apply. Application Example: Making a Local Web Server Public If you host a Web server on your local network, you can use port forwarding to allow Web requests from anyone on the Internet to reach your Web server. To make a local Web server public: 1. Assign your Web server either a fixed IP address or a dynamic IP address using DHCP address reservation, as explained in “Using Address Reservation” on page 4-4. In this example, your router will always give your Web server an IP address of 192.168.1.33. 2. In the Port Forwarding screen, configure the router to forward the HTTP service to the local address of your Web server at 192.168.1.33. HTTP (port 80) is the standard protocol for Web servers. 3. (Optional) Register a host name with a Dynamic DNS service, and configure your router to use the name as described in “Using a Dynamic DNS Service” on page 4-5. To access your Web server from the Internet, a remote user must know the IP address that has been assigned by your ISP. However, if you use a Dynamic DNS service, the remote user can reach your server by a user-friendly Internet name, such as mynetgear.dyndns.org. Configuring Port Triggering Port triggering is a dynamic extension of port forwarding that is useful in these cases: • More than one local computer needs port forwarding for the same application (but not simultaneously). • An application needs to open incoming ports that are different from the outgoing port. When port triggering is enabled, the router monitors outbound traffic looking for a specified outbound “trigger” port. When the router detects outbound traffic on that port, it remembers the IP address of the local computer that sent the data. The router then temporarily opens the specified incoming port or ports, and forwards incoming traffic on the triggered ports to the triggering computer. Fine-Tuning Your Network v1.0, January 2009 N150 Wireless Router WNR1000 User Manual While port forwarding creates a static mapping of a port number or range to a single local computer, port triggering can dynamically open ports to any computer that needs them and can close the ports when they are no longer needed. Note: If you use applications such as multiplayer gaming, peer-to-peer connections, real- time communications such as instant messaging, or remote assistance (a feature in Windows XP), you should also enable Universal Plug and Play (UPnP) according to the instructions in “Using Universal Plug and Play” on page 5-12. 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. To set up port triggering: 1. Select Port Forwarding/Port Triggering under Advanced in the main menu. The Forwarding/Port Triggering screen displays (see Figure 5-1 on page 5-7). 2. Select the Port Triggering radio button. The port triggering information displays. Figure 5-4 3. Clear the Disable Port Triggering check box. Note: If the Disable Port Triggering check box is selected after you configure port triggering, port triggering is disabled. However, any port triggering configuration information you added to the router is retained even though it is not used. Fine-Tuning Your Network v1.0, January 2009 N150 Wireless Router WNR1000 User Manual 4. In the Port Triggering Timeout field, enter a value up to 9999 minutes. This value controls the inactivity timer for the designated inbound ports. The inbound ports close when the inactivity time expires. This is required because the router cannot be sure when the application has terminated. 5. Click Add. the Port Triggering–Services screen displays. Figure 5-5 6. In the Service Name field, enter a descriptive service name. 7. In the Service User field, select Any (the default) to allow this service to be used by any computer on the Internet. Otherwise, select Single address, and enter the IP address of one computer to restrict the service to a particular computer. 8. Select the service type, either TCP or UDP. 9. In the Triggering Port field, enter the number of the outbound traffic port that will cause the inbound ports to be opened. 10. Enter the inbound connection port information in the Connection Type, Starting Port, and Ending Port fields. Fine-Tuning Your Network v1.0, January 2009 N150 Wireless Router WNR1000 User Manual 11. Click Apply. The service appears in the Port Triggering Portmap table. Figure 5-6 Using Universal ...