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N600 Wireless Dual Band Router WNDR3400 User Manual
Protecting Your Network
3-7
v1.0, August 2010
4.
From the
Service Type
list, select the application or service to be allowed or blocked. The list
already displays several common services, but you are not limited to these choices. To add any
additional services or applications that do not already appear, select
User Defined
.
5.
Select the radio button for the IP address configuration you want to block, and then enter the
IP addresses in the appropriate fields.
You can block the specified service for a single computer, a range of computers (having
consecutive IP addresses), or all computers on your network.
6.
Click
Add
to enable your Block Services Setup selections.
Configuring a User-Defined Service
To define a service, first you must determine which port number or range of numbers is used by
the application. The service port numbers for many common protocols are defined by the Internet
Engineering Task Force (IETF) 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. You can often determine port number information by contacting the publisher of
the application, by asking user groups or newsgroups, or by searching.
•
Enter the starting port and ending port numbers. If the application uses a single port number,
enter that number in both fields.
•
If you know that the application uses either TCP or UDP, select the appropriate protocol. If
you are not sure, select
Both
.
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Page 52 / 149
N600 Wireless Dual Band Router WNDR3400 User Manual
Protecting Your Network
3-8
v1.0, August 2010
Scheduling Blocking
To schedule blocking:
1.
Select
Schedule
under Content Filtering in the main menu. The Schedule screen displays.
2.
Configure the schedule for blocking keywords and services.
a.
Days to Block
. Select days on which you want to apply blocking by selecting the
appropriate check boxes. Select
Every Day
to select the check boxes for all days. Click
Apply
.
b.
Time of Day to Block
. Select a start and end time in 24-hour format. Select
All Day
for
24-hour blocking. Click
Apply
.
Be sure to select your time zone in the E-mail screen as described in
“Setting the Time” on
page 3-11
.
3.
Click
Apply
to save your settings.
Viewing Logs of Web Access or Attempted Web Access
The log is a detailed record of the websites you have accessed or attempted to access. Up to
256 entries are stored in the log. Log entries appear only when keyword blocking is enabled and no
log entries are made for the trusted user.
Figure 3-6
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Page 53 / 149
N600 Wireless Dual Band Router WNDR3400 User Manual
Protecting Your Network
3-9
v1.0, August 2010
Select
Logs
under Content Filtering in the main menu. The Logs screen displays.
To refresh the log screen, click the
Refresh
button.
To clear the log entries, click the
Clear Log
button.
To e-mail the log immediately, click the
Send Log
button.
Configuring E-mail Alert and Web Access Log Notifications
To receive logs and alerts by e-mail, you must provide your e-mail account information.
To configure e-mail alert and web access log notifications:
Figure 3-7
Table 3-1.
Log Entry Descriptions
Field
Description
Date and time
The date and time the log entry was recorded.
Source IP
The IP address of the initiating device for this log entry.
Target address
The name or IP address of the website or newsgroup
visited or to which access was attempted.
Action
Whether the access was blocked or allowed.
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Page 54 / 149
N600 Wireless Dual Band Router WNDR3400 User Manual
Protecting Your Network
3-10
v1.0, August 2010
1.
Select
E-mail
under Content Filtering in the main menu. The E-mail screen displays.
2.
To receive e-mail logs and alerts from the router, select the
Turn E-mail Notification On
check box.
a.
Enter the name of your ISP’s outgoing (SMTP) mail server (such as
mail.myISP.com
) in
the
Your Outgoing Mail Server
field. You might be able to find this information in the
configuration screen of your e-mail program. If you leave this field blank, log and alert
messages will not be sent by e-mail.
b.
Enter the e-mail address to which logs and alerts are sent in the
Send To This E-mail
Address
field. This e-mail address will also be used as the From address. If you leave this
field blank, log and alert messages will not be sent by e-mail.
3.
If your outgoing e-mail server requires authentication, select the
My Mail Server requires
authentication
check box.
a.
Enter your user name for the outgoing e-mail server in the
User Name
field.
b.
Enter your password for the outgoing e-mail server in the
Password
field.
4.
You can specify that logs are automatically sent by e-mail with these options:
•
Send alert immediately
. Select this check box for immediate notification of attempted
access to a blocked site or service.
Figure 3-8
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N600 Wireless Dual Band Router WNDR3400 User Manual
Protecting Your Network
3-11
v1.0, August 2010
•
Send Logs According to this Schedule
. Specifies how often to send the logs: Hourly,
Daily, Weekly, or When Full.
–
Day
. Specifies which day of the week to send the log. Relevant when the log is sent
weekly or daily.
–
Time
. Specifies the time of day to send the log. Relevant when the log is sent daily or
weekly.
If you select the Weekly, Daily, or Hourly option and the log fills up before the specified
period, the log is automatically e-mailed to the specified e-mail address. After the log is sent,
the log is cleared from the router’s memory. If the router cannot e-mail the log file, the log
buffer might fill up. In this case, the router overwrites the log and discards its contents.
5.
Click
Apply
to save your settings.
So that the log entries are correctly time-stamped and sent at the correct time, be sure to set the
time as described in the next section.
Setting the Time
The WNDR3400 router uses the Network Time Protocol (NTP) to obtain the current time and date
from one of several network time servers on the Internet. To localize the time for your log entries,
you must specify your time zone:
•
Time Zone
. Select your local time zone. This setting is used for the blocking schedule and for
time-stamping log entries.
•
Automatically Adjust for Daylight Savings Time
. Select this check box if your region
supports daylight savings time. When this check box is set, the router will adjust the time by
adding one hour during the daylight savings time period. When daylight savings time ends, be
sure to un-check this check box.
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