D-Link DGL-4300 manual Appendix, Securing Your Network

Page 53

Using the Configuration Interface

Appendix

Securing Your Network

1. Change Admin Password

Changing the password to access your new router is the first step in securing your network. This can done through the Wizard or on the Admin Page of the Tools tab. There is no password by default and hackers will know this when trying to access your network. Make sure that the password you choose is not commonly known or something that is easy to guess such as your last name or your pet’s name. Try using a combination of letters and numbers to deter intruders from hacking into your network.Your private information should be kept private.

2.Disable DHCP and use Static IP addresses or Use Static DHCP and limit scope to the amount of users on your network.

In the event that an intruder manages to gain access to your network, having DHCP enabled makes it easier for the intruder to access other computers on your network. There are two methods for getting around this. One is to disable DHCP and use static IP addressing on all the devices connected to your network.This would mean that the intruder would have to know what IP network your devices are on in order to access them. The second way is to change the scope of the DHCP server to only include enough IP addresses for the devices in your network. You can then use the Static DHCP feature of the router to assign an IP address to each device on your network. Static DHCP still dynamically assigns an IP address to your network devices but only allows for those defined devices to obtain an IP address.

3. Change the default LAN IP address

Change the default LAN IP address from 192.168.0.1 to an alternate IP address. There are 3 ranges of IP addresses that have been reserved for use on Private Networks.

10.0.0.0- 10.255.255.255 (10.0.0.0/8)

172.16.0.0- 172.31.255.255 (172.16.0.0/12)

192.168.0.0

- 192.168.255.255 (192.168.0.0/16)

D-Link routers use 192.168.0.1 as their default LAN IP address. Choosing an alternate IP address lessens the probabilty of an intruders knowing what IP network your devices are on.

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D-Link Systems, Inc.

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Contents Page Contents Application Level Gateway ALG Configurations Table of Contents Appendix Minimum System Requirements Package ContentsIntroduction Features and Benefits Connections Hardware OverviewLEDs Power LEDWireless Basics Standards-based Technology Installation ConsiderationsWizard Using the Configuration InterfaceBasic Internet Connection Setup Wizard Page Wireless Security Setup Wizard Page Modes WANMAC Address Use the Default MTU WAN Port SpeedDhcp WAN Mode Static WAN ModeIP Address Subnet Mask Default Gateway Host Name Dhcp ConnectionIP Address Default Subnet Mask PPPoE WAN ModeLAN Settings Dhcp IP Address Range Dhcp Lease Time Number of Dynamic Dhcp ClientsStatic Dhcp Client List Add Static Dhcp ClientBasic Wireless Settings WirelessWEP Wireless Security ModeWPA-Enterprise WPA-PersonalVirtual Server AdvancedVirtual Servers List Add/Edit Virtual ServerSpecial Applications Application Level Gateway ALG ConfigurationsSpecial Applications Rules List Add/Edit Special Applications RuleRule Name Trigger Port Range Input Port Range Input Port Protocol Schedule SaveAdd/Edit Game Rule GamingGame Rules List Rule Name IP AddressEnable GameFuel GameFuel SetupGameFuel Uplink SpeedGameFuel Rules List Add/Edit GameFuel RuleRouting Enable Destination IP Netmask Gateway Interface Metric SaveAdd/Edit Route Route ListAdd/Edit Access Control Rule Access ControlEnabled Enable Access Control Rules ListWeb Filter Add/Edit Web SiteEnable MAC Address Save Filter SettingsMac Address Filters Add MAC AddressFirewall Firewall SettingsEnable SPI Enable DMZ DMZ IP Address Inbound Filter Rules List Inbound FiltersAdd/Edit Inbound Filter Rule Configuring an Inbound Filter Rule Advanced Wireless Settings Advanced WirelessPassword AdminAdministration Save and Restore ConfigurationTime Time ConfigurationSet the Date and Time Time ZoneAdd/Edit Schedule Rule SchedulesSchedule Rules List Schedule Name Days All Day Start Time End Time SaveEmail Log When Full or on Schedule Email SettingsSyslog Address Enter the IP address of the Syslog ServerSystem System CommandsReboot the Device Firmware Upgrade Notification Options Firmware UpgradeFirmware Firmware InformationTools Dynamic DNS Dynamic DNSGeneral StatusDevice Info Wireless LAN Statistics LogsLog Options Log DetailsSent Received TX Packets Dropped Errors Wireless StatisticsActive Sessions LAN StatisticsSecuring Your Network AppendixSet the Visibility Status to Invisible Glossary Appendix Appendix Graphical user interface GUI Appendix Megabit Mb Megabyte MB Megabits per second Mbps Appendix Appendix Virtual LAN Software Features Technical SpecificationsExternal Antenna Type Tech Support for customers within Canada Contacting Technical SupportWarranty Back any accessories Page Important Note Registration
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