Siemens Simens Gigaset WLAN dsl/cable SE551 - Manual (Page 53)

53
Configuring the Advanced Settings
Gigaset SE551 WLAN dsl/cable / ENG / A31008-M1029-B101-2x-7619 / configure_router.fm / 03.11.2008
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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.
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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.