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N450 Wireless Router WNR2500

•

To remove the device from the table, click the

Delete

button.

•

To edit the MAC address, device name, or priority, click the

Edit

button.

Edit the information you want to change.

Note:

You cannot delete or edit a device that is detected and automatically

added to the MAC Device List.

6.

Click the

Apply

button.

The device information is saved or removed from the MAC Device List.

Bandwidth Control

Bandwidth control lets you set a limit to the bandwidth that is available for traffic from the

router to the Internet.



To set the maximum uplink bandwidth:

1.

Select

ADVANCED > Setup > QoS Setup

.

A screen similar to the following displays:

2.

Select the

Turn Bandwidth Control On

check box.

3.

Select the

Automatically check Internet Uplink bandwidth

radio button.

4.

Click the

Check

button.

The router detects the available uplink bandwidth. After about one minute, the available

bandwidth displays onscreen. This information can help you to determine the maximum

bandwidth setting that you want to allow.

5.

Select the

Uplink bandwidth

radio button.

6.

Enter the maximum bandwidth that you want to allow, and select either

Kbps

or

Mbps

.

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N450 Wireless Router WNR2500

7.

Click the

Apply

button.

63

5

5.

Security

Keep 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 computers and other devices connected to your network.

This chapter includes the following sections:

•

Keyword Blocking of HTTP Traffic

•

Port Filtering to Block Services

•

Schedule Blocking

•

Security Event Email Notifications

For information about parental controls, see

Parental Controls

on page

38.

For information about access control, see

Set Up Access Control

on page

35.

Security

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N450 Wireless Router WNR2500

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.



To set up keyword blocking:

1.

Select

ADVANCED > Security >

Block Sites

.

A screen similar to the following displays:

2.

Select one of the keyword blocking options (by default, Never is selected):

•

Per Schedule

. Turn on keyword blocking according to the settings on the Schedule

screen (see

Schedule Blocking

on page

68).

•

Always

. Turn on keyword blocking all the time, independent of the settings on the

Schedule screen.

3.

In the Type keyword or domain name here field, enter a keyword or domain, and click the

Add Keyword

button.

To add more keywords or domains, repeat this step.

The Keyword list supports up to 32 entries. Here are some sample entries:

•

If you specify the keyword xxx, the URL www.zzyyqq.com/xxx.html is blocked, as is

the newsgroup alt.pictures.xxx.

•

If you specify the keyword .com, only websites with other domain suffixes (such

as

.edu or

.gov) can be viewed.

•

If you specify a period (

.

) as the keyword, all Internet browsing access is blocked.

4.

Click the

Apply

button.

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N450 Wireless Router WNR2500



To delete a keyword or domain:

1.

Select

ADVANCED > Security >

Block Sites

.

The Block Sites screen displays.

2.

Select the keyword or domain that you want to delete from the list.

3.

Click the

Delete Keyword

button.

To delete all keywords and domains from the list, click the

Clear List

button.

4.

Click the

Apply

button.

Note:

If you have set up email notifications (see

Security Event Email

Notifications

on page

69), you can be notified when someone

attempts to access a blocked site.

You can exempt one trusted computer from blocking and logging. The computer you exempt

needs to have a fixed IP address.



To specify a trusted computer:

1.

Select

ADVANCED > Security >

Block Sites

.

The Block Sites screen displays.

2.

Select the

Allow trusted IP address to visit blocked sites

check box.

3.

In the Trusted IP Address field, type the last octet of the IP address.

The first three octets of the IP address depend on the IP address that is assigned to the

router on the LAN Setup screen.

4.

Click the

Apply

button.

Port Filtering to Block Services

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 service or port number identifies the requested

service. 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 Internet Engineering Task Force (IETF at

) identifies the service

numbers for many common protocols. These numbers are published in RFC1700, “Assigned

Numbers.” Typically, authors of other applications choose service numbers for the

applications from the range 1024–65535. Although the router already holds a list of many

service port numbers, you are not limited to these choices. You can often find port number