Netgear Router WGT624 V3 User Manual

							Reference Manual for the 108 Mbps Wireless Firewall Router WGT624 v3
Advanced Configuration 6-11
202-10090-01, April 2005
Using LAN IP Setup Options
The LAN IP Setup feature is under the Advanced heading of the main menu. This feature 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 6-5:  LAN IP Setup Menu
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 address—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. 
						

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• 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, it is disabled. 
— 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.
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 PCs 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. 
Note: If you change the LAN IP address of the router while connected through the 
browser, you will be disconnected. You need run ipconfig /release and ipconfig /renew 
commands on your PC to reconnect to the router. You may need to restart your computer 
for the new IP address setting to take effect. 
						

							Reference Manual for the 108 Mbps Wireless Firewall Router WGT624 v3
Advanced Configuration 6-13
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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
Using Address Reservation
When you specify a reserved IP address for a PC on the LAN, that PC 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.  
						

							Reference Manual for the 108 Mbps Wireless Firewall Router WGT624 v3
6-14 Advanced Configuration
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To reserve an IP address: 
1.Click the Add button. 
Figure 6-6:  Address Reservation screen
2.
In the IP Address box, type the IP address to assign to the PC 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 PC or server.  
(Tip: If the PC 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 PC contacts the routers 
DHCP server. Reboot the PC 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 108 Mbps Wireless Firewall Router WGT624 v3
Advanced Configuration 6-15
202-10090-01, April 2005
How to Configure 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 6-7. Static Route Summary Table
To add or edit a Static Route:
1.Click the Add button to open the Add/Edit Menu, shown below.
Figure 6-8. 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 purpose only.)  
						

							Reference Manual for the 108 Mbps Wireless Firewall Router WGT624 v3
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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.
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 6-8.
In this example:
• The Destination IP Address and IP Subnet Mask fields specify that this static route applies to 
all 134.177.0.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. 
						

							Reference Manual for the 108 Mbps Wireless Firewall Router WGT624 v3
Advanced Configuration 6-17
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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 WGT624 v3 wireless router.
Figure 6-9:  Remote Management screen
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 108 Mbps Wireless Firewall Router WGT624 v3
6-18 Advanced Configuration
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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 PC. 
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, 
you can 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.  
						

							Reference Manual for the 108 Mbps Wireless Firewall Router WGT624 v3
Advanced Configuration 6-19
202-10090-01, April 2005
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 6-10. UPnP Menu
Turn UPnP On: UPnP can be enabled or disabled for automatic device configuration. The default 
setting for UPnP is enabled. If disabled, the router will not allow any device to automatically 
control the resources, such as port forwarding (mapping), of the router. 
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. 
						

							Reference Manual for the 108 Mbps Wireless Firewall Router WGT624 v3
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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.