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51
Configuring the Advanced Settings
Global time limit
ì
Activate or deactivate the time limit available to all users in your network for surfing
the Internet each month. This makes sense if your Internet tariff is time-based.
ì
Enter the total amount of time available per month in hours.
Global volume limit
ì
Activate or deactivate the limit on the data volume available to all users in your net-
work for surfing the Internet (download and upload) each month. This makes sense
if your Internet tariff is volume-based.
ì
Enter the total volume of data available per month in megabytes (MB).
Individual limits
You can specify individual limits for data volumes for individual PCs within your net-
work.
ì
Select or deselect
Individual limits
.
ì
Enter the MAC address of the PC and a device name for identification.
ì
In the
Volume limit
field, enter the data volume available per month in megabytes
(MB). A standard volume limit is used for all non-listed clients.
ì
Click on
Delete
to delete an entry.
ì
Click on
Add
to create a new entry with the entered data or for the selected PC.
ì
Click on
OK
to save and apply the changes.
You can check at any time how much time and volume is still available this month in the
Status
–
Traffic Control
menu (see page 105) and on the login screen for the configu-
ration program under
Traffic Control
(see page 24).
Please remember:
The values recorded by your device for online time and transmitted data volume are
only intended for your guidance and may differ from the exact values determined by
your Internet provider.
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52
Configuring the Advanced Settings
Firewall
The firewall functions of the Gigaset SE551 WLAN dsl/cable include various security
functions for your local network.
You can:
u
protect your network against hacker attacks (see below),
u
block individual PCs' access to selected services or Internet sites (see page 56) or
restrict them by means of a schedule rule (see page 59).
The firewall functions for Gigaset SE551 WLAN dsl/cable are activated and configured in
the factory. If you wish to deactivate the firewall, carry out the following steps:
ì
In the
Advanced Settings
–
Internet
menu, select
Firewall
.
ì
Select the required option.
ì
Click
OK
to apply the settings.
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53
Configuring the Advanced Settings
Attack detection
If the firewall functions of your Gigaset SE551 WLAN dsl/cable are activated, the device
monitors and limits the access of incoming traffic via the DSL connection with a func-
tion called Stateful Packet Inspection (SPI). This allows the Gigaset SE551 WLAN dsl/
cable to identify and prevent certain types of attack from the Internet, such as Denial-
of-Service (DoS). DoS attacks are aimed at devices and networks with Internet connec-
tions. The aim is not so much to steal data but to paralyse the computer or network to
such an extent that the network resources are no longer available. A typical hacker
attack involves making a remote computer announce that it is acting for the paralysed
device, for example, and receive the data meant for it.
You can use the Attack Detection function to change the standard firewall settings and
arrange to be notified by email about any attempted hacker attacks.
ì
In the
Advanced Settings
–
Internet
–
Firewall
menu, select
Attack Detection
.
ì
Select the security level for the firewall.
The default setting is
Medium
, which combines a high degree of security with little
effect on functionality.
–
The level
High
offers you maximum security with possibly limited functionality
for special applications.
–
The level
Low
offers you maximum functionality with possibly reduced security.
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54
Configuring the Advanced Settings
–
Select
Custom
to determine the criteria for defence against hacker attacks your-
self. Further setting options are then shown in the window.
E-mail notification of a hacker attack
You can choose to be informed by e-mail about a possible hacker attack.
ì
Enter the following in the dialogue fields:
–
Select the
Notification interval
, i.e. at what intervals you wish to be informed
about hacker attacks. If hacker attacks have been identified and blocked in the
intervening period, you will receive a summary about each event.
–
E-mail address to notify
: Enter the e-mail address to which the notifications are
to be sent.
–
Outgoing mail server (SMTP)
: Enter the address of the outgoing mail server
through which your device can send you the notifications.
–
Incoming mail server (POP3)
: If your outgoing mail server demands authentica-
tion via POP3 before e-mails can be sent, enter the address of the outgoing mail
server here.
–
Enter your
User name
and the relevant
Password
.
ì
Click on
Test Settings
to check the details for the e-mail notification.
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55
Configuring the Advanced Settings
User-defined settings
u
Stateful Packet Inspection
Your device monitors and limits the access of incoming traffic from the Internet with
SPI (Stateful Packet Inspection). This allows it to identify and block certain types of
attack such as Denial-of-Service (DoS). A typical DoS attack involves a remote com-
puter paralysing a system and announcing that it is acting for the paralysed device
in order to receive the data meant for it. For the level
Custom
you can specify your-
self whether you wish to activate SPI on your device and which exceptions you wish
to make.
ì
Activate or deactivate
Stateful Packet Inspection
for your device's Internet connec-
tion.
ì
Select the services for which you also wish to allow incoming
Traffic
if it has been
initiated by a client in your LAN. If you select the
All
option at the end of the list you
can allow all services.
ì
Click
OK
to apply the settings.
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