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NBG-418N v2 User’s Guide
121
C
HAPTER
14
Content Filter
14.1
Overview
Content filter allows you to block specific URLs.
The NBG-418N v2 checks the URL’s domain name (or IP address) and file path separately when
performing keyword blocking.
The URL’s domain name or IP address is the characters that come before the first slash in the URL.
For example, with the URL www.zyxel.com.tw/news/pressroom.php, the domain name is
www.zyxel.com.tw.
The file path is the characters that come after the first slash in the URL. For example, with the URL
www.zyxel.com.tw/news/pressroom.php, the file path is news/pressroom.php.
Since the NBG-418N v2 checks the URL’s domain name (or IP address) and file path separately, it
will not find items that go across the two. For example, with the URL www.zyxel.com.tw/news/
pressroom.php, the NBG-418N v2 would find “tw” in the domain name (www.zyxel.com.tw). It
would also find “news” in the file path (news/pressroom.php) but it would not find “tw/news”.
14.2
What You Can Do
•
Use the
Filter
screen
to block the users on your network from accessing certain web sites
(
Section 14.3 on page 121
).
14.3
Filter Screen
Use the
Filter
screen to enable keyword blocking and add keywords for blocking.
Click
Security
>
Content Filter
. The screen appears as shown next.
Page 122 / 237
Chapter 14 Content Filter
NBG-418N v2 User’s Guide
122
Figure 87
Security > Content Filter > Filter
The following table describes the labels in this screen.
Table 55
Security > Content Filter > Filter
LABEL
DESCRIPTION
Enable URL
Keyword Blocking
The NBG-418N v2 can block Web sites with URLs that contain certain keywords in the
domain name or IP address. For example, if the keyword "bad" was enabled, all sites
containing this keyword in the domain name or IP address will be blocked, e.g., URL http:/
/www.website.com/bad.html would be blocked.
Select
Enable
to turn on this feature. Otherwise, select
Disable
.
Keyword
Type a keyword in this field. You may use any character (up to 64 characters). Wildcards
are not allowed. You can also enter a numerical IP address.
Add Keyword
Click this after you have typed a keyword to create a new entry in the table below.
When you try to access a web page containing a keyword, you will get a message telling
you that the content filter is blocking this request.
Delete Selected
Keyword
Click this to remove the selected entry.
Select
Click this to select an entry and click
Delete Selected Keyword
to remove it.
Filtered Keyword
This displays the keyword already added.
Page 123 / 237
NBG-418N v2 User’s Guide
123
C
HAPTER
15
Remote Management
15.1
Overview
This chapter provides information on the
Remote Management
screen.
Note: When you configure remote management to allow management from the WAN, you
still need to configure a firewall rule to allow access. See the firewall chapters for
details on configuring firewall rules.
Page 124 / 237
Chapter 15 Remote Management
NBG-418N v2 User’s Guide
124
15.1.1
Remote Management Limitations
Remote management over WAN will not work when:
1
You have disabled that service in the remote management screen.
2
The IP address in the
Secured Client WAN IP Address
field does not match the client IP address.
If it does not match, the NBG-418N v2 will disconnect the session immediately.
3
There is already another remote management session with an equal or higher priority running. You
may only have one remote management session running at one time.
4
There is a firewall rule that blocks it.
15.1.2
Remote Management and NAT
When NAT is enabled:
•
Use the NBG-418N v2’s WAN IP address when configuring from the WAN.
•
Use the NBG-418N v2’s LAN IP address when configuring from the LAN.
15.1.3
System Timeout
There is a default system management idle timeout of five minutes (three hundred seconds). The
NBG-418N v2 automatically logs you out if the management session remains idle for longer than
this timeout period. The management session does not time out when a statistics screen is polling.
You can change the timeout period in the
System
screen.
15.2
WWW Screen
To change your NBG-418N v2’s World Wide Web settings, click
Management
>
Remote MGMT
to
display the
WWW
screen.
Figure 88
Management > Remote MGMT > WWW
Page 125 / 237
Chapter 15 Remote Management
NBG-418N v2 User’s Guide
125
The following table describes the labels in this screen.
Table 56
Management > Remote MGMT > WWW
LABEL
DESCRIPTION
Enable HTTP from the
WAN side
Click the check box to configure your NBG-418N v2 via HTTP using a web browser
through the WAN interface.
Server Port
You may change the
Server port
number for a service if needed, however you
must use the same port number in order to use that service for remote
management.
Secured Client WAN IP
Address
A secured client is a “trusted” computer that is allowed to communicate with the
NBG-418N v2 using this service.
Select
All
to allow any computer to access the NBG-418N v2 using this service.
Choose
Selected
to just allow the computer with the IP address that you specify to
access the NBG-418N v2 using this service.
Note: This only applies on WAN IP.
Apply
Click
Apply
to save your customized settings and exit this screen.
Reset
Click
Reset
to begin configuring this screen afresh.

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