Reference Manual for the RangeMax 240 Wireless Router WPNT834

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•

If you wish to block all Internet browsing access during a scheduled period, enter the keyword

“.” and set the schedule in the Schedule menu.

To specify a Trusted User, enter that computer’s IP address in the Trusted User box and click

Apply

.

You may specify one Trusted User, which is a computer that is exempt from blocking and

logging. Since the Trusted User is identified by IP address, you should configure that

computer with a fixed IP address.

Blocking Access to Internet Services

The WPNT834 router allows you to block the use of certain Internet services by computers on

your network. This is called service blocking or port filtering. The Block Services menu is shown

below:

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, select either

Per Schedule

or

Always

, then click

Apply

. If you want to

block by schedule, be sure to specify a time period in the Schedule menu. For scheduling, see

“Scheduling When Blocking Will Be Enforced” on page 5-5

.

Figure 5-2

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To specify a service for blocking, click

Add

. The Block Services Setup menu appears, as shown

below:

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

.

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.

Enter the Starting Port and Ending Port numbers. If the application uses a single port number, enter

that number in both boxes.

If you know that the application uses either TCP or UDP, select the appropriate protocol. If you are

not sure, select

Both

.

Figure 5-3

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Blocking Services 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.

Scheduling When Blocking Will Be Enforced

The WPNT834 router allows you to specify when blocking is enforced. The Schedule menu is

shown below:

Use this schedule for blocking content.

•

Days to Block. Select days to block by checking the appropriate boxes. Select

Every day

to

check the boxes for all days. Click

Apply

.

•

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 menu.

Figure 5-4

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Viewing Logs of Web Access or Attempted Web Access

The log is a detailed record of the Web sites you have accessed or attempted to access. Up to 128

entries are stored in the log. Log entries only appear when keyword blocking is enabled, and no log

entries are made for the Trusted User. An example is shown below:

Log entries are described in the following table.

Figure 5-5

Table 5-1. 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 Web site or newsgroup visited or

attempted to access.

Action

This field displays whether the access was blocked or allowed.

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Log action buttons are described in the following table.

Configuring E-Mail Alert and Web Access Log Notifications

In order to receive logs and alerts by E-mail, you must provide your E-mail information in the E-

Mail menu, shown below:

•

Turn e-mail notification on.

Check this box if you wish to receive e-mail logs and alerts from the router.

•

Your outgoing mail server .

Enter the name of your ISP’s outgoing (SMTP) mail server (such as mail.myISP.com). You

may be able to find this information in the configuration menu of your e-mail program. If you

leave this box blank, log and alert messages will not be sent via e-mail.

Table 5-2. 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.

Figure 5-6