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Page 46 / 85 Scroll up to view Page 41 - 45
User Manual
54 Mbps Wireless G Modem Router With 4 Port Switch
HN-DR4PG
46
Address
can be used in the MAC address space and are considered as don’t care.
Function buttons for second setting block:
ADD
Click to save the rule entry to the configuration.
Function buttons for the
Current Filter Table
:
Delete Selected
Delete selected filtering rules from the filter table. You can click the checkbox at the
Select
column to select the filtering rule.
Delete All
Delete all filtering rules from the filter table.
4.6.3
Port Forwarding
Firewall keeps unwanted traffic from the Internet away from your LAN computers. Add a
Port Forwarding entry will create a tunnel through your firewall so that the computers on
the Internet can communicate to one of the computers on your LAN on a single port.
Fields in this page:
Page 47 / 85
User Manual
54 Mbps Wireless G Modem Router With 4 Port Switch
HN-DR4PG
47
Field
Description
Port Forwarding
Check this item to enable the port-forwarding feature.
Protocol
There are 3 options available: TCP, UDP and Both.
Comment
To provide any remarkable notes for ease identification.
Enable
Check this item to enable this entry.
Local IP Address
IP address of your local server that will be accessed by Internet.
Local Port
The destination port number that is made open for this application on
the LAN-side.
Settings
Selects between Interface and IP address
Interface
Select the WAN interface on which the port-forwarding rule is to be
applied.
Remote IP Address
The source IP address from which the incoming traffic is allowed. Leave
blank for all.
Public Port
The destination port number that is made open for this application on
the WAN-side
Function buttons for the setting block:
Apply Changes
Set new configuration. New parameters will take effect after save into flash memory and
reboot the system. See section “Admin” for save details.
ADD
Click to save the rule entry to the configuration.
Function buttons for the Current Port Forwarding Table:
Delete Selected
Delete the selected port forwarding rules from the forwarding table. You can click the
checkbox at the
Select
column to select the forwarding rule.
Delete All
Delete all forwarding rules from the forwarding table
4.6.4
Parental Control
Parental controls provide parents with automated tools to help protect their children and
set restrictions while using devices and services. The control includes: URL blocking and
Domain blocking.
URL Blocking
In URL (Uniform Resource Locator) blocking, requests to a network are examined to decide
if a specific URL is to be allowed or denied access.
Page 48 / 85
User Manual
54 Mbps Wireless G Modem Router With 4 Port Switch
HN-DR4PG
48
Domain Blocking
Provides the ability to block/filter web sites visited based upon categories. This provides for
corporate, educational and parental control over the type of sites that are deemed
appropriate by the networks owner.
Page 49 / 85
User Manual
54 Mbps Wireless G Modem Router With 4 Port Switch
HN-DR4PG
49
Fields on the first setting block:
Field
Description
URL Blocking
Capability
To enable filtering based
on URL. Default value is “disabled”.
Domain Blocking
Capabilities
To enable filtering based on Domain. Default value is “disabled”.
Function button for first setting block:
Apply Changes
Set new configuration. New parameters will take effect after save into flash memory and
reboot the system. See section “Admin” for save details.
Fields on the second setting block:
Field
Description
Block any URL
Basically ALL URL is to be blocked. Default value is “unchecked”.
URL
To block only URL
Domain Blocking
To block only Domain, provide domain, if selected.
Days
Check days which to comply with the filtering.
Time
Provide time from and time to which to comply with the filtering.
Page 50 / 85
User Manual
54 Mbps Wireless G Modem Router With 4 Port Switch
HN-DR4PG
50
Function buttons for second setting block:
ADD Filter
Click to save the rule entry to the
URL Blocking Table
.
Delete Selected URL
Click to delete the entry from the
URL Blocking Table.
Delete Selected Domain
Click to delete the entry from the
Domain Blocking Table.
Fields on the third setting block:
Field
Description
Excluded IP
IP address provided will be excluded from all filter settings.
Function buttons for third setting block:
ADD IP
Click to save the rule entry to the
Excluded IP Table
.
Delete Selected IP
Click to delete the entry from the
Excluded IP Table.
4.6.5
ALG
An application-level gateway (also known as ALG or application layer gateway) consists of a
security component that augments a firewall or NAT employed in a computer network. It
allows customized NAT traversal filters to be plugged into the gateway to support address
and port translation for certain application layer "control/data" protocols such as FTP,
BitTorrent, SIP, RTSP, file transfer in IM applications etc. In order for these protocols to
work through NAT or a firewall, either the application has to know about an address/port
number combination that allows incoming packets, or the NAT has to monitor the control
traffic and open up port mappings (firewall pinhole) dynamically as required.

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