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3
‐
7 Firewall
This broadband router supports several firewall functions which will help you to protect
your network and computer. In this chapter, instructions for using these functions will be
given, so you can utilize these functions to protect your network from hackers and
malicious intruders.
3
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6
‐
1 Access Control
By using access control, you can restrict your computers from accessing improper website,
or using disallowed applications. You can even only allow computers with certain MAC
address to access the network, or deny the computers in the list from accessing Internet.
MAC Filtering: Deny or allow access based on MAC address of client computer
Here are descriptions of every setup item:
Item Name
Description
Enable MAC Filtering
Check this box to enable MAC address based
filtering, and please select ‘Deny’ or ‘Allow’ to
decide the behavior of MAC filtering table. If
you select deny, all MAC addresses listed in
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filtering table will be denied from connecting
Internet; if you select allow, only MAC
addresses listed in filtering table will be able to
connect to Internet.
Client PC MAC address
Please input the MAC address of computer or
network device here, dash (
‐
) or colon ( : ) are
not required. (i.e. If the MAC address label of
your wireless device indicates
‘aa
‐
bb
‐
cc
‐
dd
‐
ee
‐
ff’ or ‘aa:bb:cc:dd:ee:ff’, just
input ‘aabbccddeeff’
Computer Name
All computer names found by this broadband
router on local network will be listed here. You
can select the computer name and click ‘<<’
button to add selected computer’s IP address
to ‘Private IP’ field.
Please note that this list may not be able to list
all computers on your local network. If you
think some computer doesn’t appear in the
list, select ‘Refresh’ and this broadband router
will rescan for all computers attached to LAN
port again.
Comment
You can input any text here as the comment of
this MAC address, like ‘ROOM 2A Computer’ or
anything. You can input up to 16
alphanumerical characters here. This is
optional and you can leave it blank, however,
it’s recommended to use this field to write a
comment for every MAC addresses as a
memory aid.
Add
Click ‘Add’ button to add the MAC address and
associated comment to the MAC address
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filtering table.
Reset
Remove all inputted values.
All MAC address entries will be listed in this page:
To delete one or more entries listed here, please check the box of the mapping entry (under
‘Select’), and click ‘Delete Selected’ button.
If you wish to delete all mapping entries, click ‘Delete All’ button. To deselect all checked
boxes, click ‘Reset’ button.
If you wish to use IP address
‐
based filtering, please use ‘IP Filtering Table’ in this page:
Please check ‘Enable IP Filtering Table’ box first, and select ‘Deny’ or ‘Allow’ to decide the
behavior of IP filtering table (Deny the access of IP addresses in the list, or allow the access
of IP addresses in the list). You have to click ‘Add PC’ button to add a new IP address to the
list:
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Here are descriptions of every setup item:
Item Name
Description
Client PC Description
Please input any text to describe this IP
address, up to 16 alphanumerical characters.
Client PC IP address
Please input the starting IP address in the left
field, and input the end IP address in the right
field to define a range of IP addresses, or just
input the IP address in the left field to define a
single IP address.
You also have to select the type of Internet services that will be applied to this access
control rule from the list:
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You can select multiple services here. If you wish to deny or allow all services of certain IP
address(es), please select both ‘TCP’ and ‘UDP’.
If the service you wish to deny or allow is not listed, you can use ‘User Define Service’ table
to add a new service of your own:
Here are descriptions of every setup item:
Item Name
Description
Protocol
Please select the protocol type of this service:
TCP or UDP, or ‘Both’.
Port Range
Please input the port range if this service. For a
single port number, just input the number of
service port (like ‘110’).
If this service consists multiple continuous
ports, you can input ‘110
‐
120’ for port number
110 to 120, or ’110,115,120’ for port number
110, 115, and 120.
Click ‘Add’ to add this IP address restriction rule to the list (and back to previous page), or
click ‘Reset’ to clear all texts in every field.

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