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Page 36 / 90 Scroll up to view Page 31 - 35
RangeMax NEXT Wireless Router Model WNR854T Reference Manual
3-4
Content Filtering
v1.0, 2006-04
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 your network sends a request for
service to a server computer on the Internet, 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 destination port number 80 is an HTTP (Web server) request.
To enable service blocking:
1.
Select either Per Schedule or Always
2.
Click
Apply
.
3.
If you want to block by schedule, be sure to specify a time period in the Schedule menu, as
described in
“Scheduling When Blocking Will Be Enforced” on page 3-6
.
To specify a service for blocking:
1.
Click
Add
. The Add Services menu will appear, as shown below:
2.
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.
Figure 3-3
Page 37 / 90
RangeMax NEXT Wireless Router Model WNR854T Reference Manual
Content Filtering
3-5
v1.0, 2006-04
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 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. This information can usually be determined by contacting the publisher of the
application or from user groups of newsgroups.
1.
Enter the Starting Port and Ending Port numbers. If the application uses a single port number,
enter that number in both boxes.
2.
If you know that the application uses either TCP or UDP, select the appropriate protocol. If
you are not sure, select Both.
Configuring Service Blocking by IP Address Range
Under “Filter Services For”, you can block the specified service for a single computer, a range of
computers (having consecutive IP addresses), or all computers on your network.
Page 38 / 90
RangeMax NEXT Wireless Router Model WNR854T Reference Manual
3-6
Content Filtering
v1.0, 2006-04
Scheduling When Blocking Will Be Enforced
The RangeMax NEXT Wireless Router allows you to specify when blocking will be enforced. The
Schedule menu is shown below:
Use this schedule for blocking content. Check this box if you wish to enable a schedule for
Content Filtering.
•
Days to Block. Select days to block by checking the appropriate boxes. Select “Every day” to
check the boxes for all days.
•
Time of Day to Block. Select a start and end time in 23:59 format. Select “All Day” for 24
hour blocking.
•
Click
Apply
to make the schedule take effect.
Be sure to select your Time Zone in the E-Mail menu; see
“Configuring E-Mail Alert and Web
Access Log Notifications” on page 3-9
for details.
Figure 3-4
Page 39 / 90
RangeMax NEXT Wireless Router Model WNR854T Reference Manual
Content Filtering
3-7
v1.0, 2006-04
Viewing Logs of Web Access or Attempted Web Access
The log is a detailed record of what Web sites you have accessed or attempted to access. Up to 128
entries are stored in the log. Log entries will only appear when keyword blocking is enabled, and
no log entries will be made for the Trusted User. An example is shown below:
Log entries are described in
Table 3-1
.
Figure 3-5
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.
Action
This field displays whether the access was blocked or allowed.
Target URL
The name or IP address of the Web site or newsgroup visited or
attempted to access.
Page 40 / 90
RangeMax NEXT Wireless Router Model WNR854T Reference Manual
3-8
Content Filtering
v1.0, 2006-04
Log action buttons are described in
Table 3-2
.
Table 3-2. Log action buttons
Field
Description
Refresh
Click this button to refresh the log screen.
Clear Log
Click this button to clear the log entries.
Send Log
Click this button to E-mail the log immediately.

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