User manual BELKIN F6D3230-4

[. . . ] Dual-Band Wireless A+G Router Share your broadband Internet connection User Manual F6D3230-4 Table of Contents 1 Introduction . 1 Placement of your Router for Optimal Performance . 12 3 Connecting and Configuring the Router. 13 Setting Up the Router with the Easy Install Wizard . [. . . ] Click "Apply Changes" (5) to finish. 2. 3. 5. 55 Using the Web-Based Advanced User Interface Configuring the Firewall Your Router is equipped with a firewall that will protect your network from a wide array of common hacker attacks including: · IP Spoofing · SYN flood · Land Attack · UDP flooding · Ping of Death (PoD) · Tear Drop Attack · Denial of Service (DoS) · ICMP defect · IP with zero length · RIP defect · Smurf Attack · Fragment flooding · TCP Null Scan The firewall also masks common ports that are frequently used to attack networks. These ports appear to be "stealth", meaning that for all intents and purposes, they do not exist to a would-be hacker. You can turn the firewall function off if needed; however, it is recommended that you leave the firewall enabled. Disabling the firewall protection will not leave your network completely vulnerable to hacker attacks, but it is recommended that you leave the firewall enabled. 56 Using the Web-Based Advanced User Interface 1 2 3 section Configuring Internal Forwarding Settings The Virtual Servers function will allow you to route external (Internet) calls for services such as a web server (port 80), FTP server (Port 21), or other applications through your Router to your internal network. Since your internal computers are protected by a firewall, computers outside your network (over the Internet) cannot get to them because they cannot be "seen". A list of common applications has been provided in case you need to configure the Virtual Server function for a specific application. If your application is not listed, you will need to contact the application vendor to find out which port settings you need. 4 5 6 7 8 9 Choosing an Application Select your application from the drop-down list. The settings will be transferred to the next available space in the screen. Click "Apply Changes" to save the setting for that application. To remove an application, select the number of the row that you want to remove then click "Clear". Manually Entering Settings into the Virtual Server To manually enter settings, enter the IP address in the space provided for the internal (server) machine, the port(s) required to pass (use a comma between multiple ports), and then select the port type (TCP or UDP) and click "Apply Changes". You can only pass one port per internal IP address. Opening ports in your firewall can pose a security risk. You can enable and disable settings very quickly. It is recommended that you disable the settings when you are not using a specific application. 57 Using the Web-Based Advanced User Interface Setting Client IP Filters The Router can be configured to restrict access to the Internet, email, or other network services at specific days and times. Restriction can be set for a single computer, a range of computers, or multiple computers. To restrict Internet access to a single computer, for example, enter the IP address of the computer you wish to restrict access to in the IP fields (1). Next, enter "80" in both the port fields (2). You can also select "Always" to block access all of the time. Select the day to start on top (5), the time to start on top (6), the day to end on the bottom (7), and the time to stop (8) on the bottom. The computer at the IP address you specified will now be blocked from Internet access at the times you specified. Note: Be sure you have selected the correct time zone under "Utilities> System Settings> Time Zone". (5) (6) (1) (2) (3) 58 (4) (7) (8) (9) Using the Web-Based Advanced User Interface 1 2 3 section Enabling the Demilitarized Zone (DMZ) The DMZ feature allows you to specify one computer on your network to be placed outside of the firewall. This may be necessary if the firewall is causing problems with an application such as a game or video conferencing application. [. . . ] Cet appareil numérique de la classe B conforme á la norme NMB-003 du Canada. Europe-European Union Notice Radio products with the CE 0682 or CE alert marking comply with the R&TTE Directive (1995/5/EC) issued by the Commission of the European Community. Compliance with this directive implies conformity to the following European Norms (in brackets are the equivalent international standards). · EN 60950 (IEC60950) ­ Product Safety · EN 300 328 Technical requirement for radio equipment · ETS 300 826 General EMC requirements for radio equipment. [. . . ]