R = RIP (Routing Information Protocol) assigned route.

I = ICMP (Internet Control Message Protocol) Redirect route.

Network Destination IP address. Address

Netmask

The subnetwork associated with the destination.

This is a template that identifies the address bits in the destination address used for

routing to specific subnets. Each bit that corresponds to a “1” is part of the subnet

mask number; each bit that corresponds to “0” is part of the host number.

Gateway The IP address of the router at the next hop to which frames are forwarded.

Interface The local interface through which the next hop of this route is reached.

Metric

When a router receives a routing update that contains a new or changed destination

network entry, the router adds 1 to the metric value indicated in the update and enters

the network in the routing table.

Firewall

The Belgacom b-box’s firewall enables access control of client PCs, blocks common hacker

attacks, including IP Spoofing, Land Attack, Ping of Death, IP with zero length, Smurf Attack,

UDP port loopback, Snork Attack, TCP null scan, and TCP SYN flooding. The firewall does not

significantly affect system performance and we advise leaving it enabled to protect your network.

Note:

After you check the radio button in the “Enable or disable Firewall features” field, you must

click the “SAVE SETTINGS” button to display the list of firewall features.

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Access Control

Access Control allows users to define the outgoing traffic permitted or not-permitted through

the WAN interface. In the example above, all incoming and outgoing emails are blocked. The

default is to permit all outgoing traffic. (See the following page for details.)

The Belgacom b-box can also limit the access of hosts within the local area network (LAN). The

MAC Filtering Table allows the Belgacom b-box to enter up to 32 MAC addresses that are not

allowed access to the WAN port.

The following items are displayed on the Access Control screen:

Parameter Description

Enable Filtering Enables or disables the filtering function. Function

Normal Filtering Table Displays the IP address (or an IP address range) filtering table.

Click Add PC on the Access Control screen to view the following page.

Access Control Add PC

The settings in the screen shot below will block all email sending and receiving.

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Define the appropriate settings for client PC services (as shown above). Click “OK” to save your

settings. The added PC will now appear in the Access Control page.

MAC Filter

Use this page to block access to your network using MAC addresses.

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The Belgacom b-box can also limit the access of hosts within the local area network (LAN). The

MAC Filtering Table allows the Belgacom b-box to enter up to 32 MAC addresses that are

allowed access to the WAN port. All other devices will be denied access.

URL Blocking

To configure the URL Blocking feature, use the table below to specify the web sites

(www.somesite.com) and/or keywords you want to filter on your network.

To complete this configuration, you will need to create or modify an access rule in “Access

Control” on page 4-33. To modify an existing rule, click the Edit option next to the rule you

want to modify. To create a new rule, click on the Add PC option.

From the Access Control, Add PC section, check the option for “WWW with URL Blocking”

in the Client PC Service table to filter out the web sites and keywords selected below, on a

specific PC.

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The Belgacom b-box allows the user to block access to web sites from a particular PC by

entering either a full URL address or just a keyword. This feature can be used to protect children

from accessing violent or pornographic web sites.

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