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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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