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3
3.
Filtering Content
This chapter describes how to monitor and filter the content traveling on your network. When you
log in to the gateway (see
Log In to Your Gateway
on page
10), these tasks are grouped under
Content Filtering. This chapter includes the following sections:
View Denial of Service (DoS) Attack Logs
Limit Internet Site Access
Allow Unrestricted Access
Disable Gateway Features
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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway
V
iew Denial of Service (DoS)
Attack Logs
A content filter log is a detailed record of the denial of service (DoS) attacks directed at your
network. You can set up email notification or you can view the logs on the gateway.
To receive notification of attacks by email:
1.
In the main menu, under Content Filtering, select
Logs
.
2.
Enter an email address.
This address is the full email address to which you want the gateway to send logs.
3.
Enter the SMTP server name.
Type the outgoing SMTP mail server of your ISP. If you leave this box blank, the gateway
does not send logs.
4.
Select the E-mail Alerts
Enable
check box.
5.
Click
Apply
.
6.
Perform any of the following actions:
To refresh the display, click
Refresh
.
To send the log to the contact email address, click
E-mail Log
.
To clear the log entries from the display, click
Clear Log
.
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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway
Limit Internet Site
Access
You can establish rules to limit access to certain Internet websites in one of two ways:
Blocking sites that contain certain words.
Blocking access to certain domains.
To block access to sites containing certain words:
1.
In the main menu, under Content Filtering, select
Block Sites
.
2.
Select the Keyword Blocking
Enable
check box.
3.
In the Keyword List, enter the words you want to block.
4.
Click
Add Keyword
.
To allow a keyword that was previously blocked:
1.
Select the keyword.
2.
Click
Remove Keyword
.
To block access to certain domains:
1.
In the main menu, under Content Filtering, select
Block Sites
.
2.
Select the Domain Blocking
Enable
check box.
3.
In the Keyword List, enter the domain you want to block.
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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway
4.
Click
Add Domain
.
To unblock a domain:
1.
Select the domain name.
2.
Click
Remove Domain
.
Allow Unrestricted
Access
You can specify up to three computers to have unrestricted access to the Internet.
To allow unrestricted access:
1.
In the main menu, under Content Filtering, select
Block Sites
.
2.
Select the
Allow Trusted Computer to Visit Blocked Sites
check box.
3.
Enter the MAC address of each computer.
4.
Click
Apply
.
Disable Gateway Features
You can disable the following types of gateway features:
Firewall features
Web features
NAT ALG status features
To disable specific firewall features:
In the main menu, under Content Filtering, select
Services
.
Firewall features appear near the top of the screen.
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NETGEAR DOCSIS 3.0 N450 Wi-Fi Data Gateway
The following table describes the fields displayed in this screen.
Table 1.
Firewall features
To disable specific web features:
In the main menu, under Content Filtering, select
Services
.
Web features appear near the middle of the screen.
To block certain web-oriented cookies, Java scripts, and pop-up windows, select the
corresponding check boxes.
To disable specific NAT ALG Status features:
In the main menu, under Content Filtering, select
Services
.
Feature
Description
Firewall
Enable
. The gateway performs stateful packet inspection (SPI).
Disable
. The gateway does not perform SPI.
IPSec Pass-Through
Enable
. The gateway forwards IPS traffic.
Disable
. The gateway blocks traffic.
PPTP Pass-Through
Enable
. The gateway forwards PPTP traffic.
Disable
. The gateway blocks PPTP traffic.
Multicast
Enable
. The gateway passes multicasting streams through the firewall.
Disable
. The gateway blocks multicasting streams.
Port Scan Detection
Enable
. The gateway responds to Internet-based port scans.
Disable
. The gateway does not respond to Internet-based port scans.
IP Flood Detection
Enable
. The gateway blocks malicious devices that are attempting to flood
devices.
Disable
. The gateway does not block malicious devices.

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