Netgear Cg3100d2 Owners Manual

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Managing Your Network4-3
v1.0, July 2009
Viewing the Connection Status
Use the Connection screen to track the gateway’s initialization procedure, and to get details about 
the downstream and upstream cable channel. The time is displayed  after the gateway is initialized.
Figure 4-2 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
4-4Managing Your Network
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The gateway automatically goes through the following steps in the provisioning process:
• Scan and lock the downstream frequency, and then link back 
 in upstream direction.
• Obtain an IP address for the gateway itself. Then the
  gateway assigns an IP address for the 
connected PC.
• Connect to the Internet.
Backing Up and Restoring Your Settings
The configuration settings of the gateway are stored  in a configuration file in the gateway. To see 
the backup settings:
1. Log in to the gate
 way as described in “Logging In to Your Gateway” on page  1-4 .
2. In the main menu, under Maintena nce, select Backup Settings to displ
 ay the following screen:
Figure 4-3
You can save a copy of the current configura tion settings or restore the saved settings:
• To save a copy of the current  
 configuration settings, click Back Up.
• To restore the saved configura tion settings from a backup fil
 e:
a. Click  Br
 owse.
b. Loc
ate and select the previously saved backup file.
c.Click  R
estore .  
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Managing Your Network4-5
v1.0, July 2009
A message notifies you when the gateway has been restored to previous settings. Then, the 
gateway restarts, which  takes about one minute.
Note: When restoring configuration  settings, do not interrupt the process by going online, 
turning off the gateway, or  shutting down the computer. 
Changing the Built-In Password
For security reasons, the gateway has its own user  name and password. Also, after a period of 
inactivity for a set length of tim e, the administrator login will au tomatically disconnect. You can 
change the gateway’s password.
NETGEAR recommends that you change the defau lt pas
 sword to a more secure password. The 
ideal passwords should contain no dictionary words from any language, and should be a mixture of 
both upper and lower case letters, numbers, and  symbols. Your passwords can be up to 30 
characters.
To change the password:
1. Log in to the gate
 way as described in “Logging In to Your Gateway” on page  1-4 .
2. In the ma
 in menu, under Maintenance, select Se t Password. The Set Password screen displays.
Figure 4-4
3.To change the password, first enter the old p assword, and then enter the new password twice. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
4-6Managing Your Network
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4.Click  Apply  to save your changes. 
Note: After changing the password, you will be required to log in again to continue the 
configuration. If you have backed up the  gateway settings previously, you should 
do a new backup so that  the saved settings file includes the new password. 
Running Diagnostic Utilities
From the Diagnostics screen you can use Ping or Traceroute.
To use diagnostics:
1.Log in to the gate
 way as described in “Logging In to Your Gateway” on page  1-4 .
2. In
 the main menu, under Maintenance, select  Diagnostics. The Diagnostics screen displays
Figure 4-5
. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Managing Your Network4-7
v1.0, July 2009
Testing Connectivity with the Ping Command
To start a ping test, enter the IP address in the Diagnostics screen, and click the  Ping button. The 
Ping Results are displayed:
Figure  4-6
Traceroute
To start a Traceroute test:
1.In the Diagnostics screen, 
 select Traceroute in the Utility field:
Figure  4-7 
						

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4-8Managing Your Network
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2.Fill in the fields:
• T
arget . The IP address or host name of th e computer you would like to trace. 
• Max Hop
 s. Maximum number of hops to search for target. 
• Data Size . Th
 e size of the packet. 
• Base Por
 t. The port number  to send packet. 
• Res
olve Host . Turn On or OFf to resolve th e host name to IP address . 
3. Click  St
a rt Te st  to begin the Traceroute. 
4. Click the  Refr
 esh button to see the results. 
Viewing the Event Log
The gateway logs security-related events such  as denied incoming service requests and hacker 
probes. To see the event log:
1. Log in to the gate
 way as described in “Logging In to Your Gateway” on page  1-4 .
2. In
 the main menu, under Maintenance, select  Event Log. The Event Log screen displays:
Figure 4-8
To clear the log, click  Clear Log; to refresh th e log, click Refresh. You can enable e-mail 
notification to receive these logs in an  e-mail message. For information about e-mail 
notifications, see  “Configuring Logs” on page  3-1 . 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Customizing Your Network5-1
v1.0, July 2009
Chapter 5 
Customizing Y
our Network
This chapter describes how to customize your ne twork through the advanced settings on your 
gateway. When you log in to the gateway, these tasks are grouped under Advanced.
This chapter includes:
• “DMZ Host” on page  5-1 ”
• “LAN IP Setup” on page  5-2
• “Configuring Universal Plug and Play (UPnP)” on page  5-5
•
Note:  For information about  port forwarding, see “Firewall Rules” on page  3-5 .
“NAT” on page
 5-6
Log in to the gateway usin g its default address 
 of http://192.168.0.1  or at whatever IP address the 
unit is currently configured. Us e the default user name of admin and default password of 
password , or the password you have set up.
DMZ Host
You can use the DMZ Host screen to set up  a default DMZ computer. Specifying a default 
DMZ computer allows you to set up a PC that  is available to anyone on the Internet for 
services that you have not de fined. There are security issues with doing this, so only set up 
the DMZ host if you are willing to risk ope n access. If you do not define a DMZ host the 
gateway discards any undefined service requests. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
5-2Customizing Your Network
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To set up a DMZ host:
1.In
 the main menu, under Advanced, select  DMZ Host. The following screen displays:
Figure 5-1
2.If desired, select the  Respond to Ping on WAN Port  check box.
3. T
ype the last digit(s) of the IP address in the  DMZ Address field.
4. Click  Ap
 ply.
LAN IP Setup
The LAN IP screen allows you to  configure LAN services such as the IP address of the gateway 
and DHCP. The TCP/IP and DHCP default values work fine in most cases.  
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
Customizing Your Network5-3
v1.0, July 2009
To configure LAN IP settings:
1.In the main menu, under Advance
 d, select LAN IP. The LAN IP screen displays.
Figure 5-2
2.Enter the following LAN IP settings:
• LAN IP Addr
 ess. Enter the LAN IP address that you would like to assign for your 
gateway in dotted decimal no tation. The factory default settings is 192.168.0.1.
• IP Su
bnet Mask . Enter the network number portion of an IP address. Unless you are 
implementing subnetting, use 255.2 55.255.0 as the subnet mask. 
						

							Wireless Cable Voice Gateway CG3000/CG3100 User Manual
5-4Customizing Your Network
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•DHCP Server . The gateway is set up by default as a Dynamic Host Configuration 
Protocol (DHCP) server, which provides the  TCP/IP configuration for all the computers 
that are connected to the gateway. You can change the default setting.
– Ye
s . Select this settings to enable the DHCP  server on the gateway and assign IP 
addresses to computers on your LAN automatically.
– No. Select 
 this settings to assign IP addr esses manually, or if you have another DHCP 
server on your network.
Note:  If you disable the DHCP server, you w ill need to assign to your PC a 
static IP address to reconnect to the gateway and enable the DHCP 
server again.
• S
tarting IP Address . Complete the first of the contig uous addresses in the IP address 
pool. 192.168.0.10 is the default start address.
• Endi
ng IP Address . Complete the last of the contiguous  addresses in the IP address pool. 
192.168.0.19 is the default end address.
3. Click  Ap
 ply to save your LAN settings.
Reserving an IP Ad dress for DHCP Use
To reserve an IP address for DHCP use, enter th e DHCP server reservation settings for the private 
LAN under DHCP Reservation Lease Info in the LAN Setup screen:
1. Enter the MAC addres
 s of the PC for which you want to reserve an IP address.
2. Enter the pe
 rmanent IP address for the PC.
3. Click  Ad
 d to save your settings.
The MAC address and IP address are displayed in  the DHCP Client Lea
 se Info table. The current 
system time is also displayed.
To delete an IP address from the DHCP Client Lease Info table:
1. In the DHCP Client 
 Lease Info table, click th e radio button for the MA C and IP address that 
you want to remove.
2. Click  De
 lete to remove the informati on for the selected MAC and IP address from the DHCP 
Client Lease Info table. 
To remove all information from the DHCP Client 
 Lease Info table, click Clear DHCP Leases.