Netgear Dgnd4000 N750 Wireless Dual Band Gigabit Adsl2 Plus Modem Router User Manual

							71
6
6.   USB Printer Control
Access and configure a USB printer
This chapter describes how to access and configure a USB printer attached to your wireless 
modem router.
•Control Center Configuration
•USB Printer
•Scan with a Multifunction Printer 
						

							USB Printer Control 72
N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
The USB Control Center utility allows you to control a shared USB device\
 such as a printer from 
your computer that is connected to the USB port on your router.
The utility has to be installed on each computer on your network from wh\
ich you want to control the device. You can d ownload this utility at www.netgear.com/landing/en-us/readyshare.aspx .
When you launch the USB Control Center utility, a screen similar to the following displays:
This screen is the main screen, which shows a device icon, the descripti\
on for this USB device,  and its status.
•A
vailable. The device is available from the computer that you are using. 
						

							USB Printer Control 73
 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
•
Waiting to Connect. You need to connect to this device from the computer that you are 
using. If you are connecting for the first time, you might be prompted t\
o install the device 
driver.
The following menu selections are available: •System. Exit the utility
 .
• T
ools. Access the Control Center Configuration to set up your shared USB device\
. See 
Control Center Configuration.
• About . V
 iew details about the USB Control Center software.
Control Center Configuration
1. Select  Tools > Configuration .
2. Set up these features:
• Automatically execute when logging on W
 indows. Select this check box to have 
the utility start automatically when you are logged in to Windows.
• T
imeout . Specify the time-out value for holding the USB resource when it is not\
 in 
use.
• Language . Select the display language for this utility
 .
USB Printer
The first time you use a printer, you need to click Connect. You might be asked to install the 
driver for this printer. After the driver is installed, the printer status changes to Available. 
						

							USB Printer Control 74
N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
Note:
Some USB printers (for example, HP and Lexmark printer) request 
that you do not connect the USB cable until prompted by the 
installation software.
If the USB printer is detected and connected automatically, you need to disconnect the 
printer
 , and wait for the prompt asking you to click Connect.
Once the printer shows Available status, the grayed out Paused state no longer displays in 
the Windows Printers and Faxes window
 .
This USB printer is ready. The utility does not need to always hold the connection of this USB printer. After a print job is created for this printer, the USB utility connects to this USB printer 
automatically and prints. After the print job is done, the printer status returns to the Paused 
state.
Scan with a Multifunction Printer
You can use the scan feature of a multifunction printer. 
1.  Make sure that the printer
 ’s status shows as Available.
2.  Click the  Network Scanner  button. 
This procedure activates the scanner window that is used to perform the \
scans. 
						

							75
7
7.   Security
Keep unwanted content out of your 
network
This chapter explains how to use the basic firewall features of the wireless modem router to 
prevent objectionable content from reaching the computers and other devices connected to your 
network. 
This chapter includes the following sections:
•Keyword Blocking of HTTP Traffic 
•Firewall Rules 
•Add Custom Services to Allow or Block 
•Schedule for Firewall Rules 
•Security Event Email Notifications  
						

							Security 76
N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
Keyword Blocking of HTTP Traffic
Use keyword blocking to prevent certain types of HTTP traffic from accessing your network. 
The blocking can be always or according to a schedule.
1.  Select  ADV
 ANCED > Security >  Block Sites.
2.  Select one of the keyword blocking options:
• Per Schedule. 
 Turn on keyword blocking according to the Schedule screen settings.
• Always. 
 Turn on keyword blocking all the time, independent of the Schedule screen\
.
3.  In the keyword field, enter a keyword or domain, click  Add Keyword, and click Apply.
The keyword list supports up to 32 entries. Here are some sample entries\
:
• Specify XXX to block http://www
 .badstuff.com/xxx.html.
• Specify .com if you want to allow only sites with domain suf
 fixes such as .edu or .gov.
• Enter a period (. ) to block all Internet browsing access.
To delete a keyword or domain:
1. Select the keyword you want to delete from the list.
2.  Click  Delete Keyword and  Apply to save your changes.
To specify a trusted computer:
You can exempt one trusted computer from blocking and logging. The computer you exempt  must have a fixed IP address.
1.  In the 
Trusted IP Address field, enter the IP address.
2. Click  Apply  to save your changes. 
						

							Security 77
 N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
Firewall Rules
Services are functions performed by server computers at the request of c\
lient computers. For 
example, web servers serve web pages, time servers serve time and date i\
nformation, and 
game hosts serve data about other players’ moves. When a computer on \
the Internet sends 
a request for service to a server computer, the requested service is identified by a service or 
port number. This number appears as the destination port number in the transmitted IP\
 
packets. For example, a packet that is sent with the destination port nu\
mber 80 is an HTTP 
(web server) request. 
The service numbers for many common protocols are defined by the Interne\
t Engineering 
T
 ask Force (IETF at http://www.ietf.org/ ) and published in RFC1700, “Assigned Numbers.” 
Service numbers for other applications are typically chosen from the ran\
ge 1024–65535 by 
the authors of the application. 
 Although the wireless modem router already holds a list of 
many service port numbers, you are not limited to these choices. You can often determine 
port number information by contacting the publisher of the application, \
by asking user groups 
or newsgroups, or by searching.
The Firewall Rules screen lets you block or allow specific Internet traf\
fic services by 
computers on your network. 
 This process is called service blocking or port filtering.
Note:This feature is for advanced administrators only. Incorrect 
configuration can cause serious problems.
To create firewall rules:
1. Select ADV
 ANCED > Security > Firewall Rules. 
						

							Security 78
N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
The Firewall Rules screen lists all firewall rules that have been change\
d from their default 
settings. The default rules allow all outgoing traffic and block all incoming traffic.
• T
o change the firewall rules for outbound traffic, you need to edit them from the 
Outbound Services screen as described in Step  2.
• T
o change the firewall rules for inbound traffic, you need to edit them from the Port 
Forwarding/Port Triggering screen as described in Port Forwarding and Triggering  on 
page
  109.
The Outbound Services and Inbound Services screens list the available se\
rvices you can  allow or block. 
 You can also define your own custom services to allow or block with the 
Add Service screen as described in Add Custom Services to Allow or Block  on page
  79. 
Once you add your own custom services, they are available on the Outboun\
d Services 
and Inbound Services screens.
You can also specify whether these services are always allowed or blocked\
, or allowed or  blocked per schedule a
 s described in Schedule for Firewall Rules on page  81.
2.  Outbound Services . T
 o allow or block an outbound service, click  Add. 
Use the Outbound Services screen to define a new outbound firewall rule,\
 or edit an 
existing rule. The outbound firewall rules are used to block or allow access by compute\
rs 
on your network to services or applications on the Internet.
a. Service. Select the service or application to be covered by this rule. If the s\
ervice or 
application you want does not appear in the list, you have to define it \
as described in 
Add Custom Services to Allow or Block on page  79.
b. Action . Select the action you want for traf
 fic covered by this rule:
• BLOCK always. 
 Always block the traffic covered by this rule. 
						

							Security 
79  N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000
•BLOCK by schedule, otherwise Allow. Allow the traffic covered by this rule, 
unless it is blocked according to the schedule specified on the Schedule screen in 
Schedule for Firewall Rules on page 81.
•ALLOW always. Always allow the traffic covered by this rule (this selection is the 
default setting).
•ALLOW by schedule, otherwise Block. Block the traffic covered by this rule, 
unless it is blocked according to the schedule specified on the Schedule screen in 
Schedule for Firewall Rules on page 81.
ALLOW rules are useful only when the traffic is already covered by a BLOCK rule. 
You would use these rules when you want to allow a subset of traffic that is currently 
blocked by another rule.
c. LAN Users. These settings determine which computers on your network are 
affected by this rule, based on their source (LAN) IP address. Select the option you 
want:
•Any. All local IP addresses are covered by this choice.
•Address range. You have to fill in the Start and End fields when this option is 
selected.
•Single address. Enter the required address in the Start field.
d. WAN Servers. These settings determine which Internet locations are covered by the 
rule, based on their destination (WAN) IP address. Select the option you want:
•Any. All Internet IP addresses are covered by this choice.
•Address range. You have to fill in the Start and End fields when this option is 
selected.
•Single address. Enter the required address in the Start field.
e. Log. This setting determines whether traffic covered by this rule is logged. Select 
the action you want:
•Always. This choice always logs traffic that is covered by this rule, whether it 
matches or not. (This feature is useful when you are debugging your rules.)
•Never. This choice never logs traffic covered by this rule, whether it matches or 
not.
f. Click Apply to have your changes take effect, or click Cancel to return to the 
previous screen. 
3. Inbound Services. To allow or block an inbound service, click here to set up inbound 
firewall rules for gaming or other applications. You are redirected to the Port Forwarding/Port 
Triggering screen as described in 
Port Forwarding and Triggering on page 109.
4. Click Apply to enable your Firewall Rules selections.
Add Custom Services to Allow or Block
You can define your own incoming and outgoing custom services to allow or block. Once you 
add your own custom services, they are available on the Outbound Services screen (as  
						

							Security 80
N750 Wireless Dual Band Gigabit ADSL Modem Router DGND4000 
described in Firewall Rules on page
 77) and the Inbound Services screen (as described in 
Port Forwarding and Triggering  on page
  109).
To add a custom service:
1. Click  Add Custom Service to add a service. 
The Add Service screen allows you to specify or edit your own custom service\
 definition. 
You can then use the custom service when creating firewall rules.
2.  T
o add a service for blocking, first determine which port number or range\
 of numbers is used 
by the application. 
3.  In the Name field, enter a suitable name for this service.
4.  In the 
Type list, select the correct type for this service (if in doubt, select\
 TCP/UDP):
•TCP
• UDP
• TCP/UDP
5.  Enter the starting and ending port numbers. If the application uses a si\
ngle port number
 , 
enter that number in both fields.
6.  Click  Apply  to save your information and return to the previous screen.