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USB Storage
56
N600 Wireless Dual Band Router WNDR3400v2
Specify Approved USB Devices
For more security, you can set up the router to share approved USB devices only. You can
access this feature from the Advanced Setup menu on the Advanced tab.
To set up approved USB devices:
1.
Select
Advanced > Advanced Setup > USB Settings
. The following screen displays:
2.
Click the
Approved Devices
button. The USB Drive Approved Devices screen displays:
This screen shows the approved USB devices and the available USB devices. You can
remove or add approved USB devices.
Page 57 / 121
USB Storage
57
N600 Wireless Dual Band Router WNDR3400v2
3.
To add an approved USB device, select it from the Available USB Devices list, and then click
Add
.
4.
Select the
Allow only approved devices
check box.
5.
Click
Apply
so that your change takes effect.
If you want to work with another USB device, you have to first click the
Safely Remove USB
Device
button for the currently connected USB device. Connect the other USB device, and
repeat this process.
Connect to the USB Drive from a Remote Computer
To connect to the USB drive from remote computers with a web browser, you have to use the
router’s Internet port IP address. If you are using Dynamic DNS, you can type the DNS name,
rather than the IP address. You can view the router’s Internet IP address from the dashboard
on the Basic Home screen or the Advanced Home screen.
Access the Router’s USB Drive Remotely Using FTP
To connect to the router’s USB drive using a web browser:
1.
Connect to the router by typing
ftp://
and the Internet port IP address in the address
field of Internet Explorer or Netscape Navigator, for example:
If you are using Dynamic DNS, you can type the DNS name, rather than the IP address.
2.
Type the account name and password that has access rights to the USB drive. The user
name (account name) for All – no password is
guest
.
3.
The directories of the USB drive that your account has access to are displayed, for example,
share/partition1/directory1. You can now read and copy files from the USB directory.
Page 58 / 121
58
6
6.
Security
Keeping unwanted content out of your network
This chapter explains how to use the basic firewall features of the router to prevent objectionable
content from reaching the PCs and other devices connected to your network.
This chapter includes the following sections:
•
Keyword Blocking of HTTP Traffic
•
Block Services (Port Filtering)
•
Schedule Blocking
•
Security Event Email Notifications
Page 59 / 121
Security
59
N600 Wireless Dual Band Router WNDR3400v2
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
Advanced > Security >
Block Sites
to display the following screen:
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 .com if you want to allow only sites with domain suffixes 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 then
Apply
to save your changes.
To specify a trusted computer:
You can exempt one trusted computer from blocking and logging. The computer you exempt
has to have a fixed IP address.
1.
In the Trusted IP Address field, enter the IP address.
2.
Click
Apply
to save your changes.
Page 60 / 121
Security
60
N600 Wireless Dual Band Router WNDR3400v2
Block Services (Port Filtering)
Services are functions performed by server computers at the request of client computers. For
example, web servers serve web pages, time servers serve time and date information, 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 number 80 is an HTTP
(web server) request.
The service numbers for many common protocols are defined by the Internet Engineering
Task Force (IETF at
) and published in RFC1700, “Assigned Numbers.”
Service numbers for other applications are typically chosen from the range 1024 to 65535 by
the authors of the application. Although the 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 Block Services screen lets you add and block specific Internet services by computers on
your network. This is called service blocking or port filtering. To add a service for blocking,
first determine which port number or range of numbers are used by the application.
To block services:
1.
Select
Advanced > Security > Block Services
to display the following screen:
2.
Select either
Per Schedule
or
Always
to enable service blocking, and click
Apply
. If you
selected Per Schedule, specify a time period in the Schedule screen as described in
Schedule Blocking
on page
61.

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