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3.5.2.3 URL Blocking
Click
URL Blocking
in the left pane, the page shown in the following figure
appears. This page is used to block a fully qualified domain name, such as
tw.yahoo.comand and filtered keyword. You can add or delete FQDN and filtered
keyword.
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The following table describes the parameters and buttons of this page:
Field
Description
URL Blocking
Capability
You can choose
Disable
or
Enable
.
°
Select
Disable
to disable URL blocking function
and keyword filtering function.
°
Select
Enable
to block access to the URLs and
keywords specified in the
URL Blocking Table
.
Keyword
Enter the keyword to block.
AddKeyword
Click it to add a keyword to the
URL Blocking Table
.
Delete Selected
Keyword
Select a row in the
URL Blocking Table
and click it to
delete the row.
URL Blocking
Table
A list of the URL (s) to which access is blocked.
3.5.2.4 Virtual Server
Click
Virtual Server
in the left pane, the page shown in the following figure
appears.
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The following table describes the parameters of this page:
Field
Description
Service Type
You can select the common service type, for
example,
AUTH
,
DNS
, or
FTP
. You can also define
a service name.
°
If you select
Usual Service Name
, the
corresponding parameter has the default settings.
°
If you select
User-defined Service Name
, you
need to enter the corresponding parameters.
Protocol
Choose the transport layer protocol that the service
type uses. You can choose
TCP
or
UDP
.
WAN Setting
You can choose
Interface
or
IP Address
.
WAN Interface
Choose the WAN interface that will apply virtual
server.
WAN Port
Choose the access port on the WAN.
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Field
Description
LAN Open Port
Enter the port number of the specified service type.
LAN IP Address
Enter the IP address of the virtual server. It is in the
same network segment with LAN IP address of the
router.
3.5.2.5 IP Address Mapping
NAT is short for Network Address Translation. The Network Address Translation
Settings window allows you to share one WAN IP address for multiple computers
on your LAN.
Click
IP Address Mapping
in the left pane, the page shown in the following figure
appears.
Entries in this table allow you to configure one IP pool for specified source IP
address from LAN, so one packet whose source IP is in range of the specified
address will select one IP address from the pool for NAT.
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3.5.2.6 DMZ Setting
Demilitarized Zone (DMZ) is used to provide Internet services without sacrificing
unauthorized access to its local private network. Typically, the DMZ host contains
devices accessible to Internet traffic, such as web (HTTP) servers, FTP servers,
SMTP (e-mail) servers and DNS servers.
Click
DMZ Setting
in the left pane, the page shown in the following figure appears.
The following describes how to configure DMZ.
Step 3
Select
Enable DMZ
to enable this function.
Step 4
Enter an IP address of the DMZ host.
Step 5
Click
Apply Changes
to save the settings of this page temporarily.
3.5.2.7 NAT EXCLUDE IP
Click
NAT EXCLUDE IP
in the left pane, the page shown in the following figure
appears.
In the page, you can configure some source IP addresses which use the purge
route mode when accessing internet through the specified interface.
19216811.live