Siemens gigaset SE551 Owner's Manual page 84

Wlan dsl/cable
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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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