Firewall; Attack Detection - Siemens Gigaset SX541 WLAN dsl Manual

Configuring the Advanced Settings

Firewall

The firewall functions of the Gigaset SX541 WLAN dsl 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 81) or
restrict them by means of a schedule rule (see page 84).
The firewall functions for Gigaset SX541 WLAN dsl 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.

Attack Detection

If the firewall functions of your Gigaset SX541 WLAN dsl are activated, the device mon-
itors and limits the access of incoming traffic via the DSL connection with a function
called Stateful Packet Inspection (SPI). This allows the Gigaset SX541 WLAN dsl to iden-
tify 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 connections. 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.
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