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:

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.

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.

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.

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.