Siemens SX541 WLAN dsl User Manual

Gigaset SX541 WLAN dsl / englisch / A31008-M1025-L101-1-7619        / configure_router.fm / 21.07.2005

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hablone 2005_05_02

The firewall functions of the Gigaset SX541 WLAN dsl include various security functions 
for your local network.
You can:

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protect your network against hacker attacks (see below),

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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:

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In the Advanced Settings – Internet menu, select Firewall.

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Select the required option.

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Click OK to apply the settings.

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.