D-Link DI-206 manual Setting Local IP Addresses

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DI-206 ISDN Remote Router

Please note that in the above table there are 9 users on the local network using 5 global IP addresses to access the Internet.

When a packet on the local network arrives at the router and needs to be sent to the Internet, NAT will change the source IP address (for example 192.168.100.2) to a global address (200.100.50.1, for example). If this packet generates a reply (as for example, a request to view a web page will), NAT will change the destination IP address on the reply packet back to the local IP address for delivery to the machine on the local (stub) network.

The difference between static and dynamic NAT is that once the five global addresses are manually assigned when using static NAT, they will never change. The only way to change them is by using the console program to manually reassign them. When using dynamic NAT, the router will map a local IP address to a global IP address whenever a request is made. Since there are only 5 global IP addresses in the example above, there can only be 5 mappings at any one time. In other words, much like static NAT, only 5 local machines can access the Internet at any one time. However, contrary to static NAT, the router will discard the mapping between the global and local IP addresses after a certain length of time (which is quite long so rarely happens), or after the session is finished (an example of a session is when requesting a web page, the entire page has completed downloading). The most common implementation of NAT is to define a range of dynamic addresses to be used by hosts, but assign static addresses to your servers if you wish for them to be accessible from outside your network.

Setting Local IP Addresses

When implementing NAT and thus creating a private network that is isolated from the Internet, you can assign any IP addresses to host computers without problems. However, the Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of IP Addresses specifically for private networks:

Class

Beginning Address

Ending Address

A

10.0.0.0

10.255.255.255

B

172.16.0.0

172.31.255.255

C

192.168.0.0

192.168.255.255

It is recommended that you choose local IP addresses for use with NAT from the private network IP addresses in the above list. For more information on address assignment, refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space.

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Contents DI-206 Isdn Router User’s Guide Page CE Mark Warning FCC WarningLink Offices for Registration and Warranty Service HardwareSoftware Wichtige Sicherheitshinweise Page Table of Contents Using Telnet 101 102104 Page Built-in Hub Product FeaturesEase of Installation IntroductionStandard Phone Jacks Radius Remote Authentication Dial In User ServiceDhcp Support Dynamic Host Configuration Protocol Isdn Leased LineWhat This Manual Covers Applications for your DI-206Other Resources What This Manual Doesn’t CoverPacking List Additional Installation RequirementsInstallation DI-206 Front PanelOrdering Your Isdn Line DI-206 Rear Panel Installation and Initial Configuration Telephone FeaturesConnecting the Console to the Router Setting up the ConsoleConnecting Ethernet Cables to the Router Using the ConsoleConnecting an Isdn Line to the Router Connecting a Telephone or Fax Machine to the RouterDevice Port Device Being Cable to USE Used Connected Type Important Notes on Ethernet ConnectionsInitial Configuration of the Router Powering Up Devices for Initial ConfigurationConfiguring the LAN Port Choose Interface Configuration, LAN Choose Network Configuration, IP ConfigurationFrom the Main Menu choose Advanced Functions Plugging in All Devices Console Program Main Menu Configuration and ManagementSystem Information Interface Configuration LAN DI-206 Isdn Remote Router Network Configuration IP Stack Configuration DI-206 Isdn Remote Router DI-206 Isdn Remote Router IP Static Route Examples IP Static RouteSnmp Agent Configuration IP NetworkingRouter Advertisement Snmp Community Configuration Snmp Authenticated Trap Snmp Trap Manager ConfigurationRemote Access Configuration Advanced FunctionsRemote Operation Overview Remote Network Connections DI-206 Isdn Remote Router Dial Configuration Dial-In User Profile DI-206 Isdn Remote Router Remote Network Profile Phone Number Supplied by Toggle between Router and CallerDI-206 Isdn Remote Router Incoming Outgoing Dhcp ConfigurationDynamic IP Pool Dhcp Server ConfigurationDI-206 Isdn Remote Router Static IP Pool Dhcp Relay Agent Filter ConfigurationFilter State of Interface Configuring a Filter SetLayer 2 Filter IP Filter DI-206 Isdn Remote Router Multiple Home Configuration DI-206 Isdn Remote Router Static ARP NAT Configuration How NAT Works NAT Setting Local IP Addresses Configure NAT/NAPT DI-206 Isdn Remote Router Dynamic NAT Static NAT Dynamic NaptStatic Napt Configure Napt for Special ApsDI-206 Isdn Remote Router Telnet/Discovery Enable DNS Configuration Host Table Multi-Link PPP Configuration Radius ConfigurationDI-206 Isdn Remote Router Admin Configuration System Status System MaintenanceStatistics CounterLAN Counter Table DI-206 Isdn Remote Router Isdn Counter Table Runtime Tables IP Routing Table PPP Table ARP TableEvent/Error Log Log ConfigurationLog and Trace View Log File Trace Buffer Trace Buffer ConfigurationPacket Triggered Last Call View Trace BufferConnection Test DiagnosticLoopback Test Ping TestSystem LAN System Isdn Software UpdateSystem Restart System Settings Backup/Restore Factory ResetRestore System Settings Backup System SettingsDI-206 Isdn Remote Router System Configuration Prom System ConfigurationSystem Reset TCP/IP Parameters ConfigurationSoftware Update Execute Bootload Eeprom Factory ResetDI-206 Isdn Remote Router Using Telnet via Isdn Using TelnetTelnet Configuration Using Telnet via LANSystem Timeout Using Radius Authentication Installing a Radius ServerConfiguring the DI-206 for Radius Authentication Adding Users to the Radius Database Problems with the LAN Interface Appendix a TroubleshootingSome Common Problems With the DI-206 Problems With the Isdn LineDI-206 Isdn Remote Router Appendix B IP Concepts IP AddressesIP Network Classes Subnet Mask Appendix C IP Protocol and Port Numbers IP Protocol NumbersIP Port Numbers General Appendix D Technical SpecificationsPhysical & Environmental Appendix E Country ID Numbers Configuration File Example Appendix F Configuration File103 BAP IndexSee LAN Snmp Offices Registration Card

DI-206 specifications

The D-Link DI-206 is a versatile and reliable networking solution designed to cater to the demands of both home and small office environments. This router is equipped with a range of features and technologies that ensure efficient connectivity and seamless online experiences.

One of the key highlights of the D-Link DI-206 is its robust and user-friendly interface, which is ideal for users of all technical levels. It offers an easy setup process, typically involving a simple web-based configuration that allows users to get their network up and running in no time. The device supports multiple operating modes, including router and access point modes, making it flexible and adaptable to varying networking requirements.

The DI-206 is equipped with dual WAN ports, which provide users with the ability to connect to two separate internet connections. This feature enhances reliability and ensures continuous internet access, as it can automatically switch to a backup connection if the primary line fails. Such redundancy is particularly advantageous for businesses that require uninterrupted connectivity for operations.

In terms of performance, the D-Link DI-206 supports advanced wireless standards, offering data transfer rates that cater to modern bandwidth needs. With dual-band capabilities, it can operate on both 2.4GHz and 5GHz frequencies, allowing users to maximize their wireless coverage while minimizing interference from other devices. This is essential for activities such as streaming, gaming, and video conferencing, where bandwidth demands can be high.

Security is another critical aspect of the D-Link DI-206. It incorporates comprehensive security features, including WPA/WPA2 encryption to protect user data from unauthorized access. Additionally, the router features a built-in firewall and supports VPN passthrough, providing an extra layer of security for users engaging in sensitive online activities.

The DI-206 also offers multiple Ethernet ports for wired connections, enabling users to connect various devices such as computers, printers, and gaming consoles directly to the network. This ensures stable and high-speed internet access for devices that require a consistent connection.

Overall, the D-Link DI-206 stands out as a reliable networking device that combines performance, versatility, and security. Whether for home use or small office environments, it provides an effective solution for users looking to establish a strong and secure network. With its range of features and technologies, the DI-206 is a compelling option for those seeking to enhance their online connectivity and overall experience.
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