Netgear Router WGR614 V6 User Manual

							Reference Manual for the 54 Mbps Wireless Router WGR614 v6
Advanced Configuration of the Router 6-9
202-10099-01, April 2005
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.
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 6-6:  LAN IP Setup Menu 
						

							Reference Manual for the 54 Mbps Wireless Router WGR614 v6
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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—192.168.1.1
• Subnet mask—255.255.255.0
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. 
None 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 (default), 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. 
						

							Reference Manual for the 54 Mbps Wireless Router WGR614 v6
Advanced Configuration of the Router 6-11
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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 192.168.1.2 and 
192.168.1.253, 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
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. 
						

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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. 
Figure 6-7:  Address Reservation menu
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 192.168.1.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. 
						

							Reference Manual for the 54 Mbps Wireless Router WGR614 v6
Advanced Configuration of the Router 6-13
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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. 
Figure 6-8:  Dynamic DNS menu
To configure Dynamic DNS:
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.
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 v6
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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 6-9. Static Route Summary Table 
						

							Reference Manual for the 54 Mbps Wireless Router WGR614 v6
Advanced Configuration of the Router 6-15
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To add or edit a Static Route:
1.Click the Add button to open the Add/Edit Menu, shown below.
Figure 6-10. 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 192.168.1.100.
• Your company’s network is 134.177.0.0. 
						

							Reference Manual for the 54 Mbps Wireless Router WGR614 v6
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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 192.168.1.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 192.168.1.100. The static route would look like Figure 6-10.
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 192.168.1.100. 
• 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 v6 router.
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 v6
Advanced Configuration of the Router 6-17
202-10099-01, April 2005 Figure 6-11:  Remote Management menu
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. 
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. 
						

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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. The Remote 
Management Address from the Remote Management Window (see Figure 6-11) is the address you 
will enter in your browsers address field.
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 6-12. UPnP Menu
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.