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Netgear Router WGR614 V5 User Manual

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    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    Advanced Configuration of the Router 7-9
    July 2004 202-10036-01
    Setting the MTU Size
    The normal MTU (Maximum Transmit Unit) value for most Ethernet networks is 1500 Bytes, 
    1492 Bytes for PPPoE connections, or 1436 for PPTP connections. For some ISPs you may need to 
    reduce the MTU. But this is rarely required, and should not be done unless you are sure it is 
    necessary for your ISP connection.
    Any packets sent through the router that are larger than the configured MTU size will be 
    repackaged into smaller packets to meet the MTU requirement. To change the MTU size:
    1.Under MTU Size, enter a new size between 64 and 1500.
    2.Click Apply to save the new configuration. 
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    7-10 Advanced Configuration of the Router
    July 2004 202-10036-01
    Using the LAN IP Setup Options
    The second feature category under the Advanced heading is LAN IP Setup. This menu allows 
    configuration of LAN IP services such as DHCP and RIP. From the Main Menu of the browser 
    interface, under Advanced, click on LAN IP Setup to view the LAN IP Setup menu, shown below.
    Figure 7-6:  LAN IP Setup Menu
    Configuring LAN TCP/IP Setup Parameters
    The router is shipped preconfigured to use private IP addresses on the LAN side, and to act.as a 
    DHCP server. The router’s default LAN IP configuration is:
    • LAN IP addresses—192.168.0.1
    • Subnet mask—255.255.255.0 
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    Advanced Configuration of the Router 7-11
    July 2004 202-10036-01
    These addresses are part of the IETF-designated private address range for use in private networks, 
    and should be suitable in most applications. If your network has a requirement to use a different IP 
    addressing scheme, you can make those changes in this menu.
    The LAN IP parameters are:
    • IP Address 
    This is the LAN IP address of the router.
    • IP Subnet Mask 
    This is the LAN Subnet Mask of the router. Combined with the IP address, the IP Subnet Mask 
    allows a device to know which other addresses are local to it, and which must be reached 
    through a gateway or router.
    • RIP Direction 
    RIP (Router Information Protocol) allows a router to exchange routing information with other 
    routers. The RIP Direction selection controls how the router sends and receives RIP packets. 
    Both is the default. 
    — When set to Both or Out Only, the router will broadcast its routing table periodically. 
    — When set to Both or In Only, it will incorporate the RIP information that it receives. 
    — When set to None, it will not send any RIP packets and will ignore any RIP packets 
    received. 
    • RIP Version 
    This controls the format and the broadcasting method of the RIP packets that the router sends. 
    (It recognizes both formats when receiving.) By default, this is set for RIP-1. 
    — RIP-1 is universally supported. RIP-1 is probably adequate for most networks, unless you 
    have an unusual network setup. 
    — RIP-2 carries more information. RIP-2B uses subnet broadcasting.
    Note: If you change the LAN IP address of the router while connected through the 
    browser, you will be disconnected. You must then open a new connection to the new IP 
    address and log in again. 
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    7-12 Advanced Configuration of the Router
    July 2004 202-10036-01
    Using the Router as a DHCP server
    By default, the router will function as a DHCP (Dynamic Host Configuration Protocol) server, 
    allowing it to assign IP, DNS server, and default gateway addresses to all computers connected to 
    the routers LAN. The assigned default gateway address is the LAN address of the router. IP 
    addresses will be assigned to the attached computers from a pool of addresses specified in this 
    menu. Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.
    For most applications, the default DHCP and TCP/IP settings of the router are satisfactory. See “IP 
    Configuration by DHCP” on page B-10 for an explanation of DHCP and information about how to 
    assign IP addresses for your network. 
    If another device on your network will be the DHCP server, or if you will manually configure the 
    network settings of all of your computers, clear the ‘Use router as DHCP server’ check box. 
    Otherwise, leave it checked. 
    Specify the pool of IP addresses to be assigned by setting the Starting IP Address and Ending IP 
    Address. These addresses should be part of the same IP address subnet as the router’s LAN IP 
    address. Using the default addressing scheme, you should define a range between 192.168.0.2 and 
    192.168.0.253, although you may wish to save part of the range for devices with fixed addresses.
    The router will deliver the following parameters to any LAN device that requests DHCP:
    • An IP Address from the range you have defined
    • Subnet Mask
    • Gateway IP Address (the router’s LAN IP address)
    • Primary DNS Server (if you entered a Primary DNS address in the Basic Settings menu; 
    otherwise, the router’s LAN IP address)
    • Secondary DNS Server (if you entered a Secondary DNS address in the Basic Settings menu
    Using Address Reservation
    When you specify a reserved IP address for a computer on the LAN, that computer will always 
    receive the same IP address each time it access the router’s DHCP server. Reserved IP addresses 
    should be assigned to servers that require permanent IP settings. 
    To reserve an IP address: 
    1.Click the Add button.  
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    Advanced Configuration of the Router 7-13
    July 2004 202-10036-01 2.
    In the IP Address box, type the IP address to assign to the computer or server. 
    (choose an IP address from the router’s LAN subnet, such as 192.168.0.X) 
    3.Type the MAC Address of the computer or server.  
    (Tip: If the computer is already present on your network, you can copy its MAC address from 
    the Attached Devices menu and paste it here.) 
    4.Click Apply to enter the reserved address into the table. 
    Note: The reserved address will not be assigned until the next time the computer contacts the 
    routers DHCP server. Reboot the computer or access its IP configuration and force a DHCP 
    release and renew. 
    To edit or delete a reserved address entry: 
    1.Click the button next to the reserved address you want to edit or delete. 
    2.Click Edit or Delete.
    Using a Dynamic DNS Service
    If your network has a permanently assigned IP address, you can register a domain name and have 
    that name linked with your IP address by public Domain Name Servers (DNS). However, if your 
    Internet account uses a dynamically assigned IP address, you will not know in advance what your 
    IP address will be, and the address can change frequently. In this case, you can use a commercial 
    dynamic DNS service, who will allow you to register your domain to their IP address, and will 
    forward traffic directed at your domain to your frequently-changing IP address.
    The router contains a client that can connect to many popular dynamic DNS services. You can 
    select one of these services and obtain an account with them. Then, whenever your ISP-assigned 
    IP address changes, your router will automatically contact your dynamic DNS service provider, 
    log in to your account, and register your new IP address.
    From the Main Menu of the browser interface, under Advanced, click on Dynamic DNS. To 
    configure Dynamic DNS:
    Note: If your ISP assigns a private WAN IP address (such as 192.168.x.x or 10.x.x.x), 
    the dynamic DNS service will not work because private addresses will not be routed on 
    the Internet. 
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    7-14 Advanced Configuration of the Router
    July 2004 202-10036-01 1.
    Register for an account with one of the dynamic DNS service providers whose names appear 
    in the ‘Select Service Provider’ box. For example, for dyndns.org, go to www.dyndns.org.
    2.Select the Use a dynamic DNS service check box. 
    3.Select the name of your dynamic DNS Service Provider. 
    4.Type the Host Name (or domain name) that your dynamic DNS service provider gave you.
    5.Type the User Name for your dynamic DNS account. 
    6.Type the Password (or key) for your dynamic DNS account. 
    7.If your dynamic DNS provider allows the use of wildcards in resolving your URL, you may 
    select the Use wildcards check box to activate this feature.  
    For example, the wildcard feature will cause *.yourhost.dyndns.org to be aliased to the same 
    IP address as yourhost.dyndns.org
    8.Click Apply to save your configuration.
    Configuring Static Routes
    Static Routes provide additional routing information to your router. Under normal circumstances, 
    the router has adequate routing information after it has been configured for Internet access, and 
    you do not need to configure additional static routes. You must configure static routes only for 
    unusual cases such as multiple routers or multiple IP subnets located on your network.
    From the Main Menu of the browser interface, under Advanced, click on Static Routes to view the 
    Static Route menu, shown below.
    Figure 7-7. Static Route Summary Table 
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    Advanced Configuration of the Router 7-15
    July 2004 202-10036-01
    To add or edit a Static Route:
    1.Click the Add button to open the Add/Edit Menu, shown below.
    Figure 7-8. Static Route Entry and Edit Menu
    2.
    Type a route name for this static route in the Route Name box under the table. 
    (This is for identification purposes only.) 
    3.Select Private if you want to limit access to the LAN only. The static route will not be reported 
    in RIP. 
    4.Select Active to make this route effective. 
    5.Type the Destination IP Address of the final destination. 
    6.Type the IP Subnet Mask for this destination. 
    If the destination is a single host, type 255.255.255.255. 
    7.Type the Gateway IP Address, which must be a router on the same LAN segment as the router. 
    8.Type a number between 1 and 15 as the Metric value.  
    This represents the number of routers between your network and the destination. Usually, a 
    setting of 2 or 3 works, but if this is a direct connection, set it to 1. 
    9.Click Apply to have the static route entered into the table. 
    As an example of when a static route is needed, consider the following case:
    • Your primary Internet access is through a cable modem to an ISP.
    • You have an ISDN router on your home network for connecting to the company where 
    you are employed. This router’s address on your LAN is 192.168.0.100.
    • Your company’s network is 134.177.0.0. 
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    7-16 Advanced Configuration of the Router
    July 2004 202-10036-01
    When you first configured your router, two implicit static routes were created. A default route was 
    created with your ISP as the gateway, and a second static route was created to your local network 
    for all 192.168.0.x addresses. With this configuration, if you attempt to access a device on the 
    134.177.0.0 network, your router will forward your request to the ISP. The ISP forwards your 
    request to the company where you are employed, and the request will likely be denied by the 
    company’s firewall.
    In this case you must define a static route, telling your router that 134.177.0.0 should be accessed 
    through the ISDN router at 192.168.0.100. The static route would look like Figure 7-8.
    In this example:
    • The Destination IP Address and IP Subnet Mask fields specify that this static route applies to 
    all 134.177.x.x addresses. 
    • The Gateway IP Address fields specifies that all traffic for these addresses should be 
    forwarded to the ISDN router at 192.168.0.100. 
    • A Metric value of 1 will work since the ISDN router is on the LAN. 
    • Private is selected only as a precautionary security measure in case RIP is activated.
    Enabling Remote Management Access
    Using the Remote Management page, you can allow a user or users on the Internet to configure, 
    upgrade and check the status of your WGR614 v5 router.
    To configure your router for Remote Management:
    1.Select the Turn Remote Management On check box.
    2.Specify what external addresses will be allowed to access the router’s remote management. 
     
    Note: For enhanced security, restrict access to as few external IP addresses as practical.
    a.To allow access from any IP address on the Internet, select Everyone. 
    Note: Be sure to change the routers default configuration password to a very secure 
    password. The ideal password should contain no dictionary words from any language, 
    and should be a mixture of letters (both upper and lower case), numbers, and symbols. 
    Your password can be up to 30 characters. 
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    Advanced Configuration of the Router 7-17
    July 2004 202-10036-01 b.
    To allow access from a range of IP addresses on the Internet, select IP address range. 
    Enter a beginning and ending IP address to define the allowed range. 
    c.To allow access from a single IP address on the Internet, select Only this computer. 
    Enter the IP address that will be allowed access. 
    3.Specify the Port Number that will be used for accessing the management interface.
    Web browser access normally uses the standard HTTP service port 80. For greater security, 
    change the remote management Web interface to a custom port by entering that number in the 
    box provided. Choose a number between 1024 and 65535, but do not use the number of any 
    common service port. The default is 8080, which is a common alternate for HTTP.
    4.Click Apply to have your changes take effect.
    Note: When accessing your router from the Internet, you will type your routers WAN IP address 
    into your browsers Address (in IE) or Location (in Netscape) box, followed by a colon (:) and the 
    custom port number. For example, if your external address is 134.177.0.123 and you use port 
    number 8080, you must enter http://134.177.0.123:8080 in your browser.
    Using Universal Plug and Play (UPnP)
    Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, 
    access the network and connect to other devices as needed. UPnP devices can 
    automatically discover the services from other registered UPnP devices on the network.
    Figure 7-9. UPnP Menu 
    						
    							Reference Manual for the 54 Mbps Wireless Router WGR614 v5
    7-18 Advanced Configuration of the Router
    July 2004 202-10036-01
    From the Main Menu of the browser interface, under Advanced, click on UPnP. Set up UPnP 
    according to the guidelines below. 
    Turn UPnP On: UPnP can be enabled or disabled for automatic device configuration. The default 
    setting for UPnP is disabled. If disabled, the router will not allow any device to automatically 
    control the resources, such as port forwarding (mapping), of the router. 
    Note: If you use applications such as multi-player gaming, peer-to-peer connections, real time 
    communications such as instant messaging, or remote assistance (a feature in Windows XP), you 
    should enable UPnP.
    Advertisement Period: The Advertisement Period is how often the router will broadcast its UPnP 
    information. This value can range from 1 to 1440 minutes. The default period is 30 minutes. 
    Shorter durations will ensure that control points have current device status at the expense of 
    additional network traffic. Longer durations may compromise the freshness of the device status 
    but can significantly reduce network traffic.
    Advertisement Time To Live: The time to live for the advertisement is measured in hops (steps) 
    for each UPnP packet sent. The time to live hop count is the number of steps a broadcast packet is 
    allowed to propagate for each UPnP advertisement before it disappears. The number of hops can 
    range from 1 to 255. The default value for the advertisement time to live is 4 hops, which should 
    be fine for most home networks. If you notice that some devices are not being updated or reached 
    correctly, then it may be necessary to increase this value a little.
    UPnP Portmap Table: The UPnP Portmap Table displays the IP address of each UPnP device 
    that is currently accessing the router and which ports (Internal and External) that device has 
    opened. The UPnP Portmap Table also displays what type of port is opened and if that port is still 
    active for each IP address.  
    						
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