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68
Configuring Advanced Settings
MAC Address
If you already had Internet access through the same Internet service provider before
connecting the Giga762SX WLAN dsl, it is possible that the MAC address of one of your
PCs was used for registration when the connection was being set up. In this case, you
must either replace the current MAC address with the MAC address registered with the
Internet service provider or ask your Internet service provider to register a MAC address
for you.
Carry out the following steps:
ì
Connect a PC to the Giga762SX WLAN dsl and open the configuration environment.
ì
In the
Advanced Settings
menu, select:
Internet
–
Internet Connection
–
MAC Address
All settings apply for the displayed connection service that you selected for editing on
the
Advanced Settings
–
Internet
(page 62) screen. If you only set up one connection
service, this information is not displayed.
ì
Specify which MAC address is to be used for the Internet connection:
–
Use default device MAC address
: You can leave this default setting if the MAC
address of the Giga762SX WLAN dsl is used for connecting to the Internet.
–
Use MAC address of this PC
: Select this option if the MAC address of the cur-
rently connected PC has previously been registered for connecting to the Internet
or if you have re-registered the MAC address of the PC on which you are currently
working.
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69
Configuring Advanced Settings
–
Use custom MAC address
: Select this option if you have asked your Internet
service provider to register a new MAC address and this is not the MAC address of
the PC on which you are currently carrying out the configuration.
ì
Click
OK
to apply the settings.
Firewall
The firewall functions of the Giga762SX WLAN dsl include various security functions for
the local network.
You can carry out the following:
u
Protect the network against hacker attacks (for information see below),
u
Block access by individual PCs to selected services (page 71).
The firewall functions for the Giga762SX WLAN dsl are activated and configured in the
factory. If you want to deactivate the firewall, carry out the following steps:
ì
In the
Advanced Settings
menu, select:
Internet
–
Firewall
ì
Click the required option.
ì
Click
OK
to apply the settings.
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70
Configuring Advanced Settings
Attack Detection
If the firewall functions of the Giga762SX WLAN dsl are activated, the device monitors
and limits access to incoming data traffic via the DSL connection with a function called
"Stateful Packet Inspection" (SPI). This allows the Giga762SX WLAN dsl to detect and pre-
vent certain types of attack from the Internet, such as Denial-of-Service (DoS). DoS
attacks are aimed at devices and networks with Internet connections. The aim is not so
much to steal data as to paralyse the computer or network to such an extent that the
network resources are no longer available. A typical hacker attack involves, for example,
a remote computer acting in place of the paralysed device and receiving the data
intended for the device.
You can use the
Attack Detection
function to change the standard firewall settings.
ì
In the
Advanced Settings
menu, select:
Internet
–
Firewall
–
Attack Detection
ì
Select the security level for the firewall:
–
The
Medium
default level offers high security and hardly limits functionality of
certain applications.
–
The
High
level offers maximum security and may limit functionality for certain
applications.
–
The
Low
level offers maximum functionality but may provide low security.
ì
Click
OK
to apply the settings.
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71
Configuring Advanced Settings
Setting up access control to the Internet
The
Access Control
function allows you to block access to various services for one or
more PCs. You can permit or block access to services at certain times.
ì
In the
Advanced Settings
menu, select:
Internet
–
Firewall
–
Access Control
ì
Activate the
Access Control
function by selecting
On
.
You have the following setting options for
Access Control
:
Access Rules
You can limit access to the Internet for all clients, or only for certain clients in the net-
work, thereby allowing or blocking access to services.
ì
Click
Add
to create an access rule.
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72
Configuring Advanced Settings
ì
Select the
Access rule type
from the list:
–
Apply to all clients
: The rule applies to all PCs in the network.
–
Specify IP address
or
Specify MAC address
: The rule applies to a PC you have
selected via the IP address or MAC address.
ì
Enter a name for the
Comment
for the access rule.
ì
Define the
Access level
.
You can choose
Deny access to the Internet
or
Allow web browsing
. If you select
Custom
, you can make the following settings:
ì
If you wish to create a
Service filter
, choose one of the following options.
–
In
Filtering mode
, specify whether the selected services are to be allowed or
blocked.
–
Select the
Services
that are to be allowed or blocked.
Select the
Protocol
and enter the appropriate
Port
(a single port number,
several port numbers separated by commas, port blocks consisting of two port
numbers separated by a dash, or any combination of these, for example
80,90-
140,180
. The
Description
that is displayed helps you to identify different serv-
ices.
–
You can also select services from the
Predefined applications
list.
–
Click
Add
to create a new entry with the entered data or for the selected, prede-
fined application.
–
Click
Delete
to delete an entry.
ì
Click
OK
to apply the settings.
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