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Page 66 / 143 Scroll up to view Page 61 - 65
Security
66
N450 Wireless Router WNR2500
information by contacting the publisher of the application, by asking user groups or
newsgroups, or by searching.
You can add and block specific Internet services by computers on your network. This feature
is called service blocking or port filtering. To add a service for blocking, first find out which
port number or range of numbers the application uses.
To block services:
1.
Select
ADVANCED > Security > Block Services
.
A screen similar to the following displays:
2.
Select one of the service blocking options (by default, Never is selected):
•
Per Schedule
. Turn on service blocking according to the settings on the Schedule
screen (see
Schedule Blocking
on page
68).
•
Always
. Turn on service blocking all the time, independent of the settings on the
Schedule screen.
3.
To add a service, click the
Add
button.
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Security
67
N450 Wireless Router WNR2500
A screen similar to the following displays:
4.
From the Service Type list, select the application or service to block.
The list already displays several common services, but you are not limited to these
choices.
5.
To add any additional services or applications that do not already display, select
User
Defined
.
6.
If you selected User Defined in the previous step:
a.
If you know the protocol that the application uses, select
TCP
or
UDP
. If you are not
sure, select
TCP/UDP
.
b.
Enter the starting and ending port numbers.
If the application uses a single port number, enter that number in both fields.
c.
Type a descriptive name in the Service Type/User Defined field.
7.
Select the radio button for the IP address configuration that you want to block, and enter the
IP addresses.
You can block the specified service for a single computer, a range of computers with
consecutive IP addresses, or all computers on your network.
8.
Click the
Add
button.
The application or service is saved in the Service Table on the Block Services screen.
To edit or delete an application or service from the Service Table:
1.
Select
ADVANCED > Security > Block Services
.
The Block Services screen displays.
2.
In the Service Table, select the radio button next to the application or service that you want
to edit or delete.
3.
To edit the application or service, click the
Edit
button.
Page 68 / 143
Security
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N450 Wireless Router WNR2500
a.
Edit the application or service as described in the previous procedure.
b.
Click the
Accept
button.
4.
To delete the application or service, click the
Delete
button.
The application or service is removed from the table.
Schedule Blocking
If you have set up keyword blocking, service blocking, or both, you can specify the days and
time that you want blocking to occur.
To schedule blocking:
1.
Select
ADVANCED > Security > Schedule
.
A screen similar to the following displays:
2.
Set up the schedule for blocking keywords and services.
•
Days to Block
. Select days on which you want to apply blocking by selecting one or
more individual check boxes, or select
Every Day
to select the check boxes for all
days.
•
Time of Day to Block
. Select a start and end time in 24-hour format, or select
All
Day
for 24-hour blocking.
3.
Select your time zone from the list.
4.
If your time zone uses daylight saving time, select the
Automatically adjust for daylight
savings time
check box.
5.
Click the
Apply
button.
Page 69 / 143
Security
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N450 Wireless Router WNR2500
Security Event Email Notifications
To receive logs and alerts by email, provide your email information in the E-mail screen, and
specify which alerts you want to receive and how often.
To set up email notifications:
1.
Select
ADVANCED > Security >
E-mail
.
A screen similar to the following displays:
2.
To receive email logs and alerts from the router, select the
Turn Email Notification On
check box.
3.
In the Your Outgoing Mail Server field, enter the name of your ISP outgoing (SMTP) mail
server (such as mail.myISP.com).
You might be able to find this information in the configuration screen of your email
program. When you leave this field blank, the router does not send log and alert
messages.
4.
Enter the email address to which logs and alerts are sent in the Send to This E-mail Address
field.
This email address is also used as the sender’s email address. When you leave this field
blank, the router does not send log and alert messages.
5.
If your outgoing email server requires authentication, select the
My Mail Server requires
authentication
check box. Enter the user name and password for the outgoing email
server.
6.
To have email alerts sent immediately when someone attempts to visit a blocked site or
service, select the
Send Alert Immediately
check box.
7.
Specify when the logs are sent.
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Security
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N450 Wireless Router WNR2500
If you select the Weekly, Daily, or Hourly option and the log fills up before the specified
period, the log is automatically emailed to the specified email address. You can also
select the log that is sent when the log is full.
Note:
Whatever option you select, after the log is sent, the log is cleared from
the router’s memory. If the router cannot email the log file, the log buffer might
fill up. In this case, the router overwrites the log and discards its contents.
8.
Click the
Apply
button.

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