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Page 131 / 292 Scroll up to view Page 126 - 130
Control Access to the Internet
131
AC1600 WiFi VDSL/ADSL Modem Router Model D6400
6.
Scroll down and select the
Allow trusted IP address to visit blocked sites
check box.
7.
In the
Trusted IP Address
field, enter the IP address of the trusted device.
The first three octets of the IP address are automatically populated and depend on the IP
address that is assigned to the modem router on the LAN Setup screen.
8.
Click the
Apply
button.
Your settings are saved.
Manage Simple Outbound Firewall Rules for Services and
Applications
A firewall protects one network (the trusted network, such as your LAN) from another (the
untrusted network, such as the Internet), while allowing communication between the two.
The modem router provides one default
outbound
firewall rule: It allows all access to the
Internet (that is, the WAN). You can add simple rules to prevent access to specific services
and applications on the Internet. In addition, you can specify if a rule applies to one user, a
range of users, or all users on your LAN.
The modem router lists many default services and applications that you can use in outbound
rules. You can also add an outbound firewall rule for a custom service or application.
For information about blocking specific keywords, URLs, or sites, see
Use Keywords to Block
Internet Sites
on page
127. This type of blocking is another aspect of the outbound firewall.
Page 132 / 292
Control Access to the Internet
132
AC1600 WiFi VDSL/ADSL Modem Router Model D6400
For information about
inbound
firewall rules, see
Manage Port Forwarding and Port
Triggering
on page
260.
Note:
Service blocking means the same thing as applying outbound firewall
rules.
Add an Outbound Firewall Rule
You can add an outbound firewall rule to prevent access to a specific service or application
on the Internet.
To add an outbound firewall rule:
1.
Launch an Internet browser from a computer or WiFi device that is connected to the
network.
2.
Type
.
A login screen displays.
3.
Enter the user name and password for the modem router.
The user name is
admin
. The default password is
password
. The user name and
password are case-sensitive.
4.
Click the
OK
button.
The BASIC Home screen displays.
5.
Select
ADVANCED > Security > Block Services
.
6.
In the Service Blocking section, specify how the modem router applies outbound rules:
•
Per Schedule
. The modem router applies outbound rules according to a schedule that
you set.
Page 133 / 292
Control Access to the Internet
133
AC1600 WiFi VDSL/ADSL Modem Router Model D6400
For more information, see
Set Up a Schedule for Keyword Blocking and Outbound
Firewall Rules
on page
138.
•
Always
. The modem router applies outbound rules continuously.
7.
Below the Service Table, click the
Add
button.
8.
From the
Service Type
menu, select service or application to be covered by this rule.
If the service or application does not display in the list, you can add it (see
Add an
Outbound Firewall Rule for a Custom Service or Application
on page
133).
9.
Specify which devices on your LAN (or LAN users) are affected by the rule, based on their
IP addresses:
•
Only This IP Address
. Enter the required address in the fields to apply the rule to a
single device on your LAN.
•
IP Address Range
. Enter the required addresses in the start and end fields to apply
the rule to a range of devices.
•
All IP Addresses
. All computers and devices on your LAN are covered by this rule.
By default, the
All IP Addresses
radio button is selected.
10.
Click the
Add
button.
The new rule is added to the Service Table on the Block Services screen.
Add an Outbound Firewall Rule for a Custom Service or
Application
The modem router lists many default services and applications that you can use in outbound
rules. If the service or application is not predefined, you specify a custom service or
application in an outbound rule.
Page 134 / 292
Control Access to the Internet
134
AC1600 WiFi VDSL/ADSL Modem Router Model D6400
To add an outbound firewall rule for a custom service or application:
1.
Find out which protocol and port number or range of numbers the service or application
uses.
You can usually find this information by contacting the publisher of the service or
application or through online user or news groups.
2.
Launch an Internet browser from a computer or WiFi device that is connected to the
network.
3.
Type
.
A login screen displays.
4.
Enter the user name and password for the modem router.
The user name is
admin
. The default password is
password
. The user name and
password are case-sensitive.
5.
Click the
OK
button.
The BASIC Home screen displays.
6.
Select
ADVANCED > Security > Block Services
.
7.
If this is the first time that you add an outbound firewall rule, in the Service Blocking section,
specify how the modem router applies outbound rules:
•
Per Schedule
. The modem router applies outbound rules according to a schedule that
you set.
For more information, see
Set Up a Schedule for Keyword Blocking and Outbound
Firewall Rules
on page
138.
•
Always
. The modem router applies outbound rules continuously.
8.
Below the Service Table, click the
Add
button.
Page 135 / 292
Control Access to the Internet
135
AC1600 WiFi VDSL/ADSL Modem Router Model D6400
9.
From the
Service Type
menu, select
User Defined
.
10.
Specify a new outbound rule as described in the following table.
Field
Description
Protocol
Select the protocol (
TCP
or
UDP
) that is associated with the service or
application. If you are unsure, select
TCP/UDP
.
Starting Port
Enter the start port for the service or application.
Ending Port
If the service or application uses a range of ports, enter the end port for the
range. If the service or application uses a single port, repeat the port number
that you entered in the
Starting Port
field.
Service Type/User Defined
Enter the name of the custom service or application.
11.
Specify which devices on your LAN (or LAN users) are affected by the rule, based on their
IP addresses:
•
Only This IP Address
. Enter the required address in the fields to apply the rule to a
single device on your LAN.
•
IP Address Range
. Enter the required addresses in the start and end fields to apply
the rule to a range of devices.
•
All IP Addresses
. All computers and devices on your LAN are covered by this rule.
By default, the
All IP Addresses
radio button is selected.
12.
Click the
Add
button.
The new rule is added to the Service Table on the Block Services screen.

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