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PROLiNK
®
H5004N User Manual
www.prolink2u.com
Version 1.00 (Jan’10)
30
Function buttons for this second setting block:
Apply Changes
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.
4.4.5.3 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.
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PROLiNK
®
H5004N User Manual
www.prolink2u.com
Version 1.00 (Jan’10)
31
Fields in this page:
Field
Description
Enable Port Forwarding
Check this item to enable the port-forwarding feature.
Protocol
There are 3 options available: TCP, UDP and Both.
Enable
Check this item to enable this entry.
Local IP Address
IP address of your local server that will be accessed by Internet.
Port
The destination port number that is made open for this application on
the LAN-side.
Remote IP Address
The source IP address from which the incoming traffic is allowed. Leave
blank for all.
External Port
The destination port number that is made open for this application on
the WAN-side
Interface
Select the WAN interface on which the port-forwarding rule is to be
applied.
Function buttons for the setting block:
Apply Changes
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.
Page 33 / 68
PROLiNK
®
H5004N User Manual
www.prolink2u.com
Version 1.00 (Jan’10)
32
4.4.5.4 DMZ
A DMZ (Demilitarized Zone) allows a single computer on your LAN to expose ALL
of its ports to the Internet. Enter the IP address of that computer as a DMZ
(Demilitarized Zone) host with unrestricted Internet access. When doing this, the
DMZ host is no longer behind the firewall.
Fields in this page:
Field
Description
Enable DMZ
Check this item to enable the DMZ feature.
DMZ Host IP Address
IP address of the local host. This feature sets a local host to be exposed
to the Internet.
Function buttons in this page:
Apply Changes
Click to save the setting to the configuration.
Page 34 / 68
PROLiNK
®
H5004N User Manual
www.prolink2u.com
Version 1.00 (Jan’10)
33
4.4.5.5 URL Blocking
The URL Blocking is the web filtering solution. The firewall includes the ability to
block access to specific web URLs based on string matches. This can allow large
numbers of URLs to be blocked by specifying only a FQDN (such as
tw.yahoo.com). The URL Blocking enforce a Web usage policy to control content
downloaded from, and uploaded to, the Web.
Fields in this page:
Field
Description
URL Blocking capability
Check this item to enable the URL Blocking feature.
FQDN
A fully qualified domain name (or FQDN) is an unambiguous
domain
name
that specifies the node's position in the
DNS
tree hierarchy
absolutely, such as tw.yahoo.com. The FQDN will be blocked to access.
Keyword
The filtered keyword such as yahoo. If the URL includes this keyword,
the URL will be blocked to access.
Function buttons in this page:
Apply Changes
Click to disable/enable the URL Blocking capability
Page 35 / 68
PROLiNK
®
H5004N User Manual
www.prolink2u.com
Version 1.00 (Jan’10)
34
Add FQDN
Add FQDN into URL Blocking table.
Delete Selected FQDN
Delete the selected FQDN from the URL Blocking table. You can click the
checkbox at the Select column to select the Blocked FQDN.
Add Filtered Keyword
Add filtered keyword into Keyword Filtering table.
Delete Selected Keyword
Delete the selected keyword from the keyword Filtering table. You can click the
checkbox at the Select column to select the filtered keyword.
4.4.5.6 Domain blocking
The firewall includes the ability to block access to specific domain based on string
matches. For example, if the URL of Taiwan Yahoo web site is “tw.yahoo.com”
and you enter “yahoo.com”, the firewall will block all the DNS queries with
“yahoo.com” string. So the Host will be blocked to access all the URLs belong to
“yahoo.com” domain. That means you can protect your computer, your house,
your office and anything else that uses DNS from being able to service domains
that you don’t want to load.
19216811.live